Audi A4 Dimensions (Length, Width, Height) Generation by Generation: Complete Guide

Knowing the exact dimensions of the Audi A4 is essential before any purchase, whether to check that it will fit in a garage, a condominium parking space, or an urban parking spot, or simply to compare generations before making a choice. Length, width, height, wheelbase, boot volume: the dimensions of the Audi A4 sedan, Audi A4 Avant (estate), and Audi A4 allroad are questions all buyers ask, as Audi's premium compact car has evolved through five main generations since 1994, with its size steadily increasing. This comprehensive guide details all the official dimensions of the Audi A4, generation by generation, in both sedan and Avant estate body styles, with useful comparisons to its direct rivals.

The Audi A4, a history of continuous growth since 1994

Launched in 1994 to replace the Audi 80, the Audi A4 established itself over thirty years as one of the leading references in the premium compact segment, alongside the BMW 3 Series and Mercedes-Benz C-Class. Its dimensional history reflects the evolution of the entire European automotive market: larger, wider, heavier, but also safer, more comfortable, and more technologically advanced with each new generation. Understanding this evolution makes it easier to choose between an older, more compact and affordable model and a newer, more spacious but also more cumbersome model in everyday use.

This gradual growth is not unique to Audi: it has affected the entire premium automotive industry since the 1990s, driven by continuously tightening safety standards (larger crumple zones, side airbags and curtain airbags, reinforced structures), growing customer demand for more interior and boot space, and the need to incorporate more and more technological equipment (screens, sensors, cameras, driver assistance systems), which takes up an increasing amount of physical space within the bodywork.

Audi A4 dimensions by generation: summary table

The following table brings together the official manufacturer dimensions for each generation of the Audi A4 sedan. These values may vary slightly depending on the trim level (S line, specific bumpers) and the exact model year, but they provide a reliable reference for comparing generations.

Generation	Period	Length	Width	Height
B5	1994-2001	4,479 mm	1,733 mm	1,415 mm
B6	2000-2004	4,544 mm	1,772 mm	1,428 mm
B7	2004-2008	4,588 mm	1,772 mm	1,427 mm
B8	2007-2015	4,703 mm	1,826 mm	1,427 mm
B9	2015-2023	4,726 mm	1,847 mm	1,427 mm
Facelifted B9	2019-2023	4,762 mm	1,847 mm	1,428 mm

This table highlights an underlying trend shared by almost all premium compact cars since the 1990s: progressively longer bodywork and a noticeable increase in width (particularly during the transition from the B7 to the B8 generation), while the height has remained surprisingly stable at around 1.42 to 1.43 meters for twenty years, with the focus primarily on increasing length and width to gain interior space and road presence.

Audi A4 B5 (1994-2001): the origins of the range

The first generation of the Audi A4, known by the internal code B5, replaced the Audi 80 in 1994 and truly introduced the A4 name that still persists today. With a length of 4,479 mm, a width of 1,733 mm, and a height of 1,415 mm, it has a decidedly compact size by today's standards, comparable to that of a modern Audi A3. Its 2,615 mm wheelbase was still generous for the time, offering satisfactory interior space despite its compact exterior dimensions.

The boot volume of the B5 sedan — a recurring question for those looking for the Audi A4 boot size in liters — is around 425 liters, a respectable figure for the category at the time of its launch. The Avant (estate) version, launched shortly after the sedan, retains the same length and width dimensions but obviously gains height and useful volume thanks to its rear hatch, with a boot that can hold up to 445 liters, expandable to 1,430 liters with the rear seats folded down.

Audi A4 B6 and B7 (2000-2008): moving upmarket

The B6 generation, introduced in 2000, marked an important step in the A4's dimensional growth. The length increased to 4,544 mm and the width jumped to 1,772 mm, a gain of nearly 4 centimeters that significantly improved interior space and road stability. The height also increased slightly to 1,428 mm. The wheelbase lengthened to 2,650 mm, offering more space in the rear seats, a weakness that was regularly criticized in the previous generation.

The B7 generation, launched in 2004, largely retained the platform and dimensions of the B6 with a cosmetic facelift rather than a major dimensional evolution: a length of 4,588 mm, an unchanged width of 1,772 mm, and a height of 1,427 mm. The B6/B7 sedan boot holds around 460 liters, while the Avant version offers a particularly generous cargo volume for the category, which can exceed 1,430 liters with the rear seats folded down.

Audi A4 B8 (2007-2015): the big dimensional leap

The dimensions of the Audi A4 B8 are by far the most sought after on the used car market. The B8 generation, unveiled in 2007, represents the most significant dimensional change in the A4's recent history. Its length increased to 4,703 mm, more than 11 centimeters longer than the B7, while its width reached 1,826 mm, a dramatic gain of 5.4 centimeters. This evolution reflects a general trend in the premium market at the time: German manufacturers considerably enlarged their compact models to meet the demand for more interior space and enhanced safety, even if it meant blurring the lines with the segment above.

The B8's wheelbase reached 2,808 mm, a gain of more than 15 centimeters compared to the previous generation, directly benefiting rear passenger legroom, which had long been considered a weakness of the A4 compared to the BMW 3 Series. The boot volume also increased to 480 liters for the sedan, with an Avant version offering up to 1,430 liters with the rear seats folded down. For more details on the mechanical reliability of this generation, which is particularly widespread on the used car market, see our comprehensive guide to the used Audi A4 B8.

Audi A4 B9 (2015-2023): the current generation and its facelifted version

The dimensions of the Audi A4 B9 currently mark the end of this trajectory. The B9 generation, launched in 2015 and still nearing the end of its sales life today after its 2019 facelift, continues the range's growth trajectory while significantly moderating it compared to the B8's jump. The initial version has a length of 4,726 mm, a width of 1,847 mm, and a height of 1,427 mm. After the 2019 facelift, the length increased to 4,762 mm thanks to new front and rear bumpers, while the width and height remained largely stable.

The B9 generation's wheelbase reached 2,820 mm, a modest increase compared to the B8 but one that confirms the stabilization of the range's interior size. The B9 sedan boot now holds 480 liters, expandable to 965 liters with the rear seats folded down, while the Avant version offers a generous 495 liters, expandable to 1,495 liters. For a complete overview of the reliability of this generation, including the sporty S4 and RS4 versions, see our used Audi A4/S4/RS4 B9 reliability guide.

The technical platform behind the dimensional evolution

The dimensional evolution of the Audi A4 is largely explained by the successive changes in the technical platform on which the vehicle is based. The B5, B6, and B7 generations are based on the PL45 platform, an architecture that gradually reached its limits in terms of modularity and capacity to accommodate new technologies. The switch to the MLB (Modularer Längsbaukasten) platform for the B8 generation in 2007 marked a major turning point, allowing Audi to completely rethink the vehicle's architecture, gain structural rigidity, and accommodate significantly larger exterior dimensions without compromising road handling.

The current B9 generation is based on an evolution of this same MLB platform, known as MLB Evo, which is shared with many other models from the Volkswagen Group, including the Audi A5, Audi Q5, and certain Porsche and Bentley models. This technical standardization allows the manufacturer to achieve considerable economies of scale, but it also imposes minimum dimensional constraints related to the requirements of the other models sharing the same base, which partly explains why it is now difficult for Audi to offer a significantly more compact A4 without rethinking the entire range's architecture.

Interior dimensions: legroom, headroom, and shoulder room

Beyond exterior dimensions, interior dimensions are an equally important criterion for occupant comfort, especially in the rear of the vehicle. In the current B9 generation, rear legroom reaches around 890 mm, a figure significantly higher than the 790 mm measured in the B7 generation, an improvement directly linked to the increased wheelbase mentioned above. Front shoulder room, which determines occupant comfort on long journeys, also increased notably between generations, from around 1,410 mm in the B5 to over 1,480 mm in the B9.

Headroom, meanwhile, remains relatively stable across generations despite the evolution of the bodywork's exterior height, as designers had to deal with the progressive lowering of the roofline for aesthetic and aerodynamic reasons, compensated by a fine adjustment of the position and shape of the seats to preserve seating comfort. This tension between aesthetics and interior space remains an ongoing challenge for Audi engineers with each new generation.

Audi A4 allroad quattro: specific dimensions

Less well known than the classic sedan and Avant, the Audi A4 allroad quattro version of the Audi A4 deserves special mention in terms of dimensions. Based on the Avant body style, it stands out with a ground clearance raised by around 34 mm compared to the standard Avant, bringing its overall height to around 1,493 mm in the B9 generation, nearly 5 centimeters more than the classic Avant. Its length and width, however, remain identical to those of the traditional Avant, with the specific lower body protections adding only a few millimeters to the overall width.

This raised ground clearance, combined with specific reinforced plastic bodywork protections and greater useful ground clearance, positions the allroad quattro as a crossover alternative to the classic sedan and Avant, appealing to customers looking for a compromise between the road handling of a premium sedan and the light off-road versatility of a raised vehicle, without switching to a significantly more imposing and heavier Audi Q5 SUV.

Audi A4 Avant (estate) dimensions: what changes compared to the sedan

The dimensions of the Audi A4 Avant, often called the Audi A4 estate, deserve a paragraph of their own. The Avant version of the Audi A4 consistently retains the same length and width dimensions as the equivalent sedan in each generation, with most of the differences focused on height and cargo volume. In the current B9 generation, for example, the Avant has a height of 1,439 mm compared to 1,427 mm for the sedan, a 12 mm difference that is explained by the estate-specific roof and rear hatch structure.

Boot volume remains the main argument for the Avant version, consistently 10 to 15 liters larger than the sedan with the rear seats upright, and significantly larger with the rear seats folded down thanks to a flat cargo floor and a wider boot opening. This configuration remains particularly popular with families and professionals who need a large useful volume while retaining the road qualities and style of a premium sedan.

Comparison: Audi A4 versus its direct rivals

To put the Audi A4 in its competitive context, it is useful to compare its dimensions to those of its historical rivals in the German premium compact segment. The BMW 3 Series (current G20 generation) has a length of 4,709 mm, a width of 1,827 mm, and a height of 1,435 mm, dimensions very close to those of the A4 B9, confirming that both manufacturers have followed a similar dimensional trajectory for twenty years. Our BMW 3 Series E90/E91 reliability guide allows for a more in-depth comparison of a previous generation comparable to the A4 B8.

The Mercedes-Benz C-Class (W205 generation) measures 4,686 mm in length, 1,810 mm in width, and 1,442 mm in height, a size slightly more compact in length and width but taller than the A4 B9, a difference that directly influences the perceived sense of interior space. Our used Mercedes-Benz C-Class W205 reliability guide details the specifics of this direct rival.

Expanded comparison: Audi A4 versus the Volkswagen Passat and the Audi A5

Within the Volkswagen Group itself, the Audi A4 sits alongside two models with similar dimensions but different purposes. The Volkswagen Passat, positioned in a slightly lower segment in terms of price but very close in size, measures 4,767 mm in length and 1,832 mm in width in its B8 generation (2014-2023), dimensions that are actually very comparable, if not slightly larger, than those of the A4 B9, illustrating the increasing overlap between the premium compact and high-end mainstream segments.

The Audi A5, the coupe and sportback version of the same technical platform as the A4, has significantly different dimensions despite its mechanical kinship. The Sportback version in particular, with its four-door coupe silhouette, measures slightly longer than the A4 sedan but about 3 centimeters shorter, with a more sloping roofline characteristic of coupe styling. Our used Audi A5/S5/RS5 B8 reliability guide details the technical specifications of this stylistic variant based on the same mechanical foundation.

How to correctly measure the available space before purchase

Before committing to the purchase of an Audi A4, regardless of its generation, it is highly recommended to physically measure the parking space you have available rather than relying solely on the manufacturer's dimensions. Here is a simple and reliable method to avoid any unpleasant surprises after purchase.

1. Measure the useful width of your garage or parking space at its narrowest point, taking into account pillars, storage units, or other obstacles that could reduce the actually available space.
2. Add a safety margin of at least 20 cm on each side of the vehicle to be able to open the doors comfortably and walk around the car.
3. Compare with the width with mirrors deployed of the targeted generation, generally between 2,000 and 2,080 mm depending on the models, and not just the body width.
4. Check the ceiling or beam height allowing for a margin of at least 10 cm above the vehicle's roof, plus more if you plan to install roof bars or a roof box.
5. Physically test the maneuver before the final purchase if possible, by temporarily borrowing a vehicle of similar size to confirm that entering and exiting maneuvers remain comfortable on a daily basis.

Payload, towing capacity and size impact

The exterior dimensions of the Audi A4 only tell part of the story: payload and towing capacity also change significantly over the generations, directly linked to chassis reinforcement and the increase in the maximum authorized loaded weight. On the current B9 generation, the braked towing capacity can reach 2,000 kg depending on the chosen engine, compared to around 1,600 to 1,700 kg on the B6 and B7 generations, a significant gain for caravan, trailer, or van owners.

The authorized roof load remains relatively stable across generations, generally between 75 and 100 kg depending on the version, a figure to check precisely in the owner's manual before installing a roof box or bike rack, especially on versions equipped with a panoramic sunroof which can slightly reduce the maximum authorized roof load compared to a standard roof.

Practical guide: which generation of Audi A4 to choose according to your constraints

The choice of the most suitable Audi A4 generation depends above all on practical parking and daily use constraints. Here are some concrete pointers to guide the decision.

• For parking in a garage or narrow underground parking: the B5, B6, and B7 generations, which are narrower (1,733 to 1,772 mm), are easier to maneuver in the constrained spaces typical of old city centers.
• To prioritize interior space and rear seat comfort: the B8 and B9 generations, thanks to their significantly more generous wheelbase (2,808 and 2,820 mm), offer much more legroom, a decisive criterion for regular family use.
• To maximize trunk volume: the Avant version of the current B9 generation represents the best compromise, with a useful volume that can reach 1,495 liters with the rear seats folded down.
• For a limited purchase budget with a compact format: used B6 and B7 generations combine a still reasonable size and very affordable purchase prices on the current market.

Impact of dimensions on parking and parking spaces

The width of the Audi A4 directly determines daily parking. One practical point often overlooked by buyers concerns the compatibility of the vehicle's dimensions with standardized parking spaces. In France, a classic parking space generally measures between 2.3 and 2.5 meters wide and about 5 meters long. With a width of 1,847 mm excluding mirrors (and about 2,080 mm with mirrors deployed), the current Audi A4 B9 remains compatible with almost all standard spaces, but leaves a smaller margin of maneuver than previous generations in the oldest and narrowest parking garages, especially in apartment buildings built before the 2000s.

For owners of parking garages built according to old standards (often sized for vehicles less than 1.75 m wide), it is highly recommended to precisely measure the available space before purchasing a B8 or B9 generation, whose width can be problematic in some historic individual garages, especially in Parisian or Lyonnais buildings built before the democratization of wider SUVs and premium sedans.

Weight and size: the other side of dimensional evolution

The lengthening and widening of the Audi A4 over the generations logically comes with a significant weight increase. The B5 generation displayed an empty weight between 1,300 and 1,450 kg depending on the engine, while the current B9 generation oscillates between 1,450 and 1,700 kg depending on the engine and equipment, an evolution that reflects not only the enlargement of the chassis but also the considerable addition of safety, comfort, and soundproofing equipment over the decades.

This weight increase has direct consequences on fuel consumption, driving dynamics, and the wear of certain mechanical components such as brakes and suspensions. A buyer prioritizing lightness and agility can therefore legitimately turn to older and more compact generations, while a buyer looking for comfort, space, and the latest driver assistance technologies will find in the B8 and B9 generations vehicles that are significantly more advanced in these aspects.

Indicative budget according to the generation and size sought

Generation	Indicative used budget	Buyer profile
B5	€2,000 to €5,000	Entry-level, beginner collector
B6/B7	€3,000 to €8,000	Compact, controlled budget
B8	€6,000 to €15,000	Good space/price compromise
B9	€15,000 to €35,000	Recent comfort and technology

S line trim and rims: what real impact on dimensions?

Many buyers wonder about the impact of S line sporty trim, particularly popular on the Audi A4, on the vehicle's actual dimensions. In fact, the S line trim does not change the length or body width announced by the manufacturer: the specific body kits (redesigned bumpers, visually widened side skirts) remain within the official dimensional tolerances, with a width difference generally less than 10 mm compared to a standard trim.

However, the larger diameter rims often associated with the S line trim (18, 19 or even 20 inches compared to 16 or 17 inches in standard trim) can slightly increase the vehicle's overall width at the wheel arches, especially if non-original rims or wheel spacers have been installed afterwards. It is therefore advisable to remain vigilant when purchasing a used vehicle that has undergone aesthetic modifications, by checking the conformity of the installation with the registration document and the legal tolerances in force.

Dashboard-related maintenance has no link with size, but remains essential

While the exterior and interior dimensions of the Audi A4 determine daily comfort and practicality, they naturally have no link with the mechanical and electronic reliability of the vehicle, which remains an equally decisive criterion when purchasing a used car. Regardless of the generation chosen for its size, it remains essential to check the overall condition of the vehicle, including dashboard warnings that can signal mechanical or electronic anomalies independent of the bodywork. Our complete guide to Audi dashboard warning lights details the meaning of each alert and the actions to take.

Anticipating resale: does size influence residual value?

One last aspect deserves to be mentioned for buyers considering the total cost of ownership: the vehicle's size indirectly influences its future resale value. Recent B8 and B9 generations, more spacious and better equipped, generally retain a better rating on the used market than older and more compact generations, which suffer from a sometimes dated image despite mechanical qualities and driving enjoyment that remain perfectly valid. This market dynamic must be integrated into the overall reflection, especially for buyers who plan to sell their vehicle within a three to five-year horizon rather than keeping it in the very long term.

Traps to avoid

• Relying solely on the dimensions announced in the configurator: larger diameter rims and certain S line body kits can slightly change the overall width.
• Forgetting the mirrors in the parking width calculation: the difference can reach an additional 20 to 25 cm compared to body width alone.
• Confusing wheelbase and total length when comparing generations, two measurements that do not always change in the same proportions.
• Neglecting the ceiling height of your garage, especially for versions equipped with a panoramic sunroof which can slightly reduce the available interior height.
• Not checking the vehicle's actual ground clearance with accessories (roof bars, roof box) before committing to a limited-height parking garage.

Reset and onboard technology: a criterion independent of size

While exterior dimensions guide the choice of parking and habitability, the onboard MMI multimedia system also evolves considerably from one generation to another, independently of the vehicle's size. The B8 and B9 generations benefit from a significantly more advanced MMI system than previous generations, with larger screens and modern connectivity features. In case of a malfunction or system freeze after an update, our complete guide to resetting the Audi MMI system details the procedure to follow to restore normal operation without dealership intervention.

Visual summary: the evolution of size at a glance

To summarize all the data presented in this guide, remember that the Audi A4 gained about 28 centimeters in length and more than 11 centimeters in width between its first B5 generation in 1994 and its latest B9 facelifted evolution, while maintaining a remarkably stable height around 1.42 to 1.43 meters. This evolution reflects a constant search for balance between habitability, safety, onboard technology, and driving dynamics, a delicate exercise that Audi engineers have managed to meet generation after generation without ever distorting the sporty and premium DNA of the range.

Frequently asked questions about Audi A4 dimensions

What is the exact length of the current Audi A4 sedan?

The B9 facelift generation, marketed since 2019, measures 4,762 mm in length in the sedan bodywork, a slightly larger dimension for the Avant version due to its specific rear hatch.

Is the Audi A4 wider than the BMW 3 Series?

Both models display very close widths, the A4 B9 measuring 1,847 mm compared to 1,827 mm for the current BMW 3 Series G20, a difference of barely perceptible 2 centimeters in daily use.

What is the trunk volume of the Audi A4 Avant (estate) in liters?

The Avant version of the current B9 generation offers a trunk volume of 495 liters with the rear seats raised, expandable to 1,495 liters with the rear seats folded down.

Does the Audi A4 B5 fit in a standard garage built before 1990?

Generally yes, its width of 1,733 mm remains compatible with the vast majority of old individual garages, unlike the significantly wider B8 and B9 generations.

What is the height difference between the sedan and the Avant?

The difference is generally around 10 to 15 mm depending on the generations, the Avant version being systematically slightly taller than the equivalent sedan.

Have the dimensions of the Audi A4 changed much since 1994?

Yes, the length increased by nearly 28 centimeters and the width by more than 11 centimeters between the B5 generation of 1994 and the current B9 facelift generation, an evolution comparable to that observed in most German premium rivals.

Does the Audi A4 wheelbase have an impact on rear legroom?

Yes, directly: the increase of more than 15 centimeters in wheelbase between the B7 generation and the B8 generation has considerably improved rear passenger legroom, a historically criticized weak point in earlier generations.

Which generation of Audi A4 should you choose for exclusive city use?

The B6 and B7 generations, which are more compact than the B8 and B9 while offering a good level of equipment for the time, often represent the best compromise for mainly urban use with severe parking constraints.

Has the weight of the Audi A4 evolved at the same pace as its dimensions?

Yes, the curb weight has increased by approximately 250 to 300 kg between the B5 generation and the current B9 generation, a direct consequence of the enlarged chassis and the addition of safety and comfort equipment.

Is there a short or compact version of the recent Audi A4?

No, unlike some rivals that sometimes offer reduced-length variants in certain markets, the European Audi A4 retains a single body length per generation and body style (sedan or Avant).

What is the width of the Audi A4 with mirrors deployed?

On the current B9 generation, the width with mirrors deployed is around 2,080 mm, an essential figure to take into account for passing in narrow lanes or parking in tight spaces.

Does the Audi A4 allroad quattro have the same dimensions as the standard Avant?

Its length and width are identical to those of the standard Avant, only the height differs significantly due to the raised ground clearance of approximately 34 mm characteristic of this version.

Do S line rims change the official width of the vehicle?

The bodywork itself remains within standard dimensional tolerances, but larger diameter rims can slightly increase the overall width at the wheel arches, a point to check in the case of an unauthorized modification.

What is the maximum towing capacity of the Audi A4 B9?

Depending on the chosen engine, the braked towing capacity can reach up to 2,000 kg on the current B9 generation, compared to 1,600 to 1,700 kg on the older B6 and B7 generations.

Does the maximum roof load vary depending on the Audi A4 generation?

It remains generally stable between 75 and 100 kg depending on the versions and generations, but it is always advisable to check the exact value in the owner's manual, especially on versions equipped with a panoramic sunroof which can slightly reduce this capacity.

Is parking the Audi A4 more difficult than parking a city car?

With a length greater than 4.7 meters on recent generations, the Audi A4 does indeed require more maneuvering space than a city car, but the parking assistance systems (rearview camera, front and rear sensors) now standard on the B8 and B9 generations more than compensate for this constraint on a daily basis.

Has the trunk volume increased significantly between generations?

Yes, the trunk went from approximately 425 liters on the B5 generation to 480 or even 495 liters on the B9 generation depending on the bodywork, an appreciable gain for families and regular professional uses requiring a substantial cargo volume on a daily basis as well as on long holiday trips.

Insurance and registration: fiscal power rather than size

Contrary to a widespread belief, the size of the vehicle does not directly enter into the calculation of the fiscal power listed on the registration certificate nor in the car insurance pricing, as these elements depend mainly on the displacement, engine power in DIN horsepower, and CO2 emissions. However, it is useful to know that the newer and larger generations of the Audi A4, generally heavier, can show slightly higher CO2 emissions at the same displacement compared to the older and more compact generations, a factor that can influence the amount of the ecological penalty during a first purchase in France, although this point only concerns new vehicles and not used ones already registered.

For buyers sensitive to car taxation, it is therefore still preferable to compare the precise technical sheets of each considered engine rather than relying solely on the vehicle's exterior size, as CO2 emissions vary greatly depending on the chosen engine block (gasoline, diesel, hybrid) regardless of the body generation.

Summary of key points to remember before purchase

Before finalizing your choice, keep in mind the essential guidelines of this guide: systematically check the width with mirrors deployed compared to your actual parking space, take into account the wheelbase for rear legroom if you regularly transport adult passengers, and do not forget that the announced trunk volume always corresponds to the seats-up configuration unless explicitly stated otherwise by the manufacturer.

Width with mirrors deployed: the only dimension that decides your garage

This is the most consulted and least well-documented dimension of all Audi A4 dimensions. A manufacturer communicates a body width: this is the one that appears on the registration certificate and in the configurators. But the car that passes through the door of your garage always measures wider, because it carries two mirrors. On the B9, the difference is not anecdotal: 180 mm, or 18 centimeters more than the value displayed everywhere. Here is the report, generation by generation, as it appears in the consulted source — and, when the data is not listed there, the line says so rather than offering a plausible figure.

Generation	Body width	Width with mirrors deployed	Difference
B5 (1994-2001)	1,733 mm	not published in the source	not published in the source
B6 (2000-2004)	1,772 mm	not published in the source	not published in the source
B7 (2004-2008)	1,772 mm	1,937 mm	+ 165 mm
Facelifted B8 (2011-2016)	1,826 mm	2,040 mm	+ 214 mm
Facelifted B8 allroad (2011-2016)	1,841 mm	2,003 mm	+ 162 mm
B9 (2015-2018)	1,842 mm	2,022 mm	+ 180 mm
Facelifted B9 (2019-2025)	1,847 mm	2,022 mm	+ 175 mm

reported from auto-data.net, generation sheets and version sheets, consulted on August 12, 2026. The boxes marked "not published" are not omissions on our part: the source does not provide this dimension for the B5 and B6, and we refuse to estimate it by interpolation.

Two practical lessons. The first: the 2,080 mm guideline that we encounter everywhere, including earlier in this guide as a safety instruction, is not a manufacturer's dimension. It is a margin of maneuver — the actual width measured on the B9 is 2,022 mm, and 2,080 mm gives you six centimeters of buffer so as not to rub a mirror shell against a concrete pillar. Keep it as a margin, not as a measurement. The second: it is the facelifted Audi A4 B8, and not the B9, that holds the overall width record with 2,040 mm, while its bodywork is 21 mm narrower. Its mirrors are simply more extended. If you are hesitating between a B8 and a B9 for a narrow garage, intuitive logic will deceive you.

Overall width, mirrors deployed (mm)

B7	1937 mm
Facelifted B8 allroad	2003 mm
B9 / Facelifted B9	2022 mm
Facelifted B8	2040 mm

A clarification that avoids a bad surprise upon delivery: on all generations since the B6, the mirrors are foldable, electrically from certain trims. With the mirrors folded, you return to a few millimeters from the body width. A garage 2 meters wide is therefore manageable with a B9 — provided you accept to fold the mirrors every time you enter, and to exit through a hatch or a door that you will only open halfway.

Audi A4 trunk volume in liters: sedan, Avant, and allroad, the complete table

The Audi A4 Avant trunk volume is the most frequent numerical request after length, and it is also the one where the most contradictory values circulate. The reason is simple: the volume depends on the bodywork, the phase (before or after facelift), and sometimes the engine. A B9 Avant g-tron, for example, drops to 415 liters because its gas tanks eat up the floor — while the same bodywork in gasoline or diesel displays 505 liters. Here is the complete report, separated by bodywork and by phase.

Version	Trunk seats up	Trunk seats down
B5 sedan (1994-2001)	440 L	not published in the source
B5 Avant (1996-2001)	390 L	1,250 L
B6 sedan (2000-2004)	445 L	720 L
B6 Avant (2001-2004)	442 L	1,184 L
B7 sedan (2004-2008)	460 L	720 L
B7 Avant (2004-2008)	442 L	1,184 L
B8 sedan (2007-2016)	480 L	962 L
B8 Avant (2008-2015)	490 L	1,430 L
B8 allroad (2009-2016)	490 L	1,430 L
B9 sedan (2015-2018)	480 L	965 L
Facelifted B9 sedan (2019-2025)	460 L	not published in the source
B9 Avant (2015-2018)	505 L	1,510 L
Facelifted B9 Avant (2019-2024)	495 L	1,495 L
B9 allroad (2016-2018)	505 L	1,510 L
Facelifted B9 allroad (2019-2025)	495 L	1,495 L

reported from auto-data.net, generation sheets and version sheets, consulted on August 12, 2026. The maximum trunk of the facelifted B9 sedan is not reported in the source: we therefore do not report it, even if the value of 965 L from the previous phase seems transposable.

Three counter-intuitive facts emerge from this table. First, the Audi A4 Avant trunk has not always been greater than that of the sedan with seats up: on B6 and B7, the estate reports 442 liters compared to 445 and 460 liters for the sedan. The hatch only becomes an advantage once the seats are folded down, where the difference explodes (1,184 compared to 720 liters). Next, the pre-facelift B9 Avant is the best estate in the entire history of the A4 in raw volume, with 505 liters: the 2019 facelift took ten from it. Finally, the allroad loses nothing in volume compared to the Avant from which it derives — the extra ground clearance is taken under the chassis, not in the trunk.

Weight, payload, GVWR and towing: the figures that block a project

The Audi A4 weight and the Audi A4 Avant weight are not curiosity data: they are the ones that determine if you can load five adults and their luggage, tow a trailer, or put a roof box. A methodological warning is necessary here, because it conditions the reading of the table: the curb weight varies by 200 to 300 kg within the same generation depending on the engine and transmission. The lines below are therefore not "the weight of the B8": they are the values reported on a specific version, named in the first column. For your car, it is the certificate of conformity that counts, never a generic table.

Reported version	Curb weight	GVWR	Payload	Roof load	Braked trailer
B5 2.8 V6 sedan	1,335 kg	1,885 kg	550 kg	not published in the source	not published in the source
B5 2.8 V6 Avant	1,380 kg	1,930 kg	550 kg	not published in the source	not published in the source
B6 3.0 V6 sedan	1,460 kg	2,010 kg	550 kg	not published in the source	not published in the source
B6 3.0 V6 Avant	1,515 kg	2,065 kg	550 kg	not published in the source	not published in the source
B7 3.2 FSI quattro sedan	1,580 kg	2,130 kg	550 kg	75 kg	1,800 kg
B7 3.2 FSI quattro Avant	1,630 kg	2,180 kg	550 kg	75 kg	1,800 kg
B8 3.2 FSI quattro sedan	1,610 kg	2,160 kg	550 kg	90 kg	1,900 kg
B8 3.2 FSI quattro Avant	1,660 kg	2,230 kg	570 kg	90 kg	1,900 kg
B8 3.0 TDI 240 allroad	1,765 kg	2,335 kg	570 kg	90 kg	1,900 kg
B9 3.0 TDI 272 quattro sedan	1,660 kg	2,230 kg	570 kg	90 kg	1,900 kg
Facelifted B9 50 TDI quattro sedan	1,690 kg	2,295 kg	605 kg	90 kg	1,900 kg
Facelifted B9 Avant 50 TDI quattro	1,730 kg	2,355 kg	625 kg	90 kg	1,900 kg
B9 3.0 TDI 272 allroad	1,730 kg	2,320 kg	590 kg	90 kg	1,900 kg

reported from auto-data.net, generation sheets and version sheets, consulted on August 12, 2026. The unbraked trailer is given at 750 kg on all versions where the source reports it (B7 to B9). The empty boxes of the B5 and B6 indicate a missing data from the source, not an absence of approval.

The roof load deserves to be stopped, because it is what decides the purchase of an Audi A4 B9 Avant roof bar or an Audi A4 B8 roof bar. The report gives 75 kg on B7 and 90 kg from the B8 — and these 90 kg include the weight of the bars themselves, that of the roof box, and that of its contents. A set of aluminum bars weighs 4 to 6 kg, a rigid 400-liter roof box between 15 and 20 kg: you have about 65 kg of payload left, which is more than enough for skis or soft luggage, but insufficient for two electric bikes placed on the roof.

Before ordering a towbar or roof bars

• Report the GVWR and GVWRa on the certificate of conformity, not on a forum
• Check the actual roof load: it sometimes drops with a panoramic sunroof
• Count the weight of the bars and the box in the authorized 90 kg
• On a braked trailer, check the allowable tongue weight (S)
• On B8 and B9, check the presence of the original wiring harness before any quote

The chart's main takeaway is clear: between a 1,335 kg B5 2.8 V6 and a 1,730 kg B9 Avant 50 TDI, the A4 has gained nearly 400 kg in thirty years, a greater proportional increase than its 28 centimeters in length. Its payload, meanwhile, has only increased from 550 to 625 kg. In other words, most of the dimensional gain has gone into the structure, soundproofing, and electronics, not into carrying capacity.

Front and rear track widths, standard fitments: the dimensions that determine your wheels

When looking for Audi A4 B8 wheels or planning a track widening, overall length and width are irrelevant. The two useful dimensions are the front and rear track widths—the distance between the centers of the wheels on the same axle—and the approved fitment. They are rarely published side by side. Here is the data.

Generation	Front track	Rear track	Fitments listed in the source
B5	1,498 mm	1,479 mm (1,478 mm Avant)	205/60 R15
B6	1,528 mm	1,526 mm	215/55 R16 on 7J x 16 wheel
B7	1,522 mm	1,522 mm	215/55 R16 on 7J x 16 wheel
B8	1,564 mm	1,551 mm	225/55 R16 (7.5J x 16) to 245/40 R18 (8J x 18)
B8 allroad	1,583 mm	1,574 mm	225/55 R17 on 8J x 17 wheel
B9 sedan	1,572 mm	1,555 mm	225/50 R17, 245/40 R18, 245/35 R19
B9 Avant	1,572 mm	1,553 mm	205/60 R16 to 245/35 R19 (7J x 16 to 8.5J x 19)
B9 allroad	1,578 mm	1,566 mm	225/50 R17, 245/40 R18, 245/35 R19

Data from auto-data.net, generation and version sheets, consulted on August 12, 2026. The fitments listed are those found on the versions consulted: they do not constitute an exhaustive list of the approvals in the certificate of conformity.

One point of honesty, because it concerns a real query: the Audi A4 B8 wheel bolt pattern, center bore, and original offset are not included in the dimensional sheet we collected. We will therefore not reproduce them here from memory, even though they are easy to find elsewhere: for this type of dimension, a half-millimeter error in the center bore means a wheel that does not center and a steering wheel that vibrates at 120 km/h. The correct method takes three steps: read the bolt pattern stamped on the back of the original wheel, measure the center bore with a caliper on the hub, and check the offset engraved "ET" on the inner spoke. The guide to wheel spacers, track widening, and their legality details the consequences of an incorrectly chosen offset at the technical inspection.

What the chart does allow you to calculate without risk, however, is the overhang. Between the B8's front track (1,564 mm) and its body width (1,826 mm), there are 262 mm left over on both sides, or 131 mm per wheel between the wheel plane and the fender edge. It is this reserve, and this alone, that determines how far you can widen before protruding past the wheel arches. On the B9 sedan, the reserve drops to 135 mm per side: the track grew less than the bodywork, which explains why the Audi A4 B8 S line and Audi A4 Avant S line trims appear better "filled" in the wheel arches with their 18 and 19-inch wheels.

Audi A4 allroad quattro dimensions: the chart no one publishes in full

The Audi A4 allroad dimensions are systematically treated in a single sentence, even though the raised estate is a body style in its own right with its own dimensions, present across two generations. It is neither an Avant raised on springs nor an SUV: its bodywork is wider than that of the contemporary Avant on the B8, and its tracks are widened at both axles.

Version	Length	Width	Height	Wheelbase
B8 allroad (2009-2011)	4,721 mm	1,841 mm	1,495 mm	2,805 mm
B8 allroad facelift (2011-2016)	4,721 mm	1,841 mm	1,495 mm	2,805 mm
B9 allroad (2016-2018)	4,750 mm	1,842 mm	1,493 mm	2,818 mm
B9 allroad facelift (2019-2025)	4,762 mm	1,847 mm	1,493 mm	2,818 mm

Data from auto-data.net, generation and version sheets, consulted on August 12,2026. The allroad's ground clearance is not provided in the consulted source: yet it is its most distinctive dimension, and we prefer not to write it rather than copy an unverified value. Look it up on the technical sheet of the exact model year you are interested in.

The figure that matters for an allroad owner is the height: 1,493 to 1,495 mm compared to 1,442 mm for a B9 Avant, or about 5 centimeters more. It may not seem like much, but it changes everything in a French underground parking lot, where the standard height is set at 1.90 m but regularly drops to 1.80 m in older buildings. An allroad at 1,495 mm fits everywhere bare; equipped with roof bars and a roof box, it adds 35 to 45 centimeters and finds itself at the limit. The photo of the height limit bar below is not a decorative illustration: it is the most frequent collision scenario for this type of car.

Audi A4 B9: phase 1 versus phase 2

To put the dimensions of a B9 in perspective with the generations that preceded it on the used market, the reliability guide for the Audi A4 B8.5 and that of the A3 8V cousin provide the mechanical context that this dimensional guide deliberately does not cover.

Checking a dimension yourself: the five-measurement method before buying

All the Audi A4 dimensions in this article come from a single, dated source. This is good practice, but it does not replace a check on the actual vehicle: a B8 with a body kit, wheel spacers, or 19-inch wheels no longer displays the configurator's dimensions. Here is the method we apply before installing any accessory.

Five measurements to take yourself

• 1. Actual width with mirrors deployedMeasure from one mirror cap to the other, with the car's wheels straight. It is this value, not the one on the registration document, that you need to compare with the garage door.
• 2. Height with accessoriesMeasure from the ground to the highest point, including roof bars and the antenna. Add 10 cm of suspension travel margin when loaded.
• 3. Actual overall lengthFrom the front bumper to the rear bumper, including a possible trunk spoiler or towbar bike rack.
• 4. Overhang at the wheel archesPlace a ruler flat on the fender, measure the gap to the tire sidewall. This is the available reserve before widening.
• 5. Maneuvering diagonalMeasure the space, not just the car: aisle width and turning radius matter as much as length.

These five measurements take fifteen minutes and prevent the most costly accessory mistake: ordering a part sized based on a theoretical dimension. If your project involves a spoiler, our guide to spoiler sizes and their dimensions uses the same measurement logic applied to the trunk; for a more ambitious body widening, the registration procedure for a wide body kit details what must be declared when the overall width actually changes.

One last missing piece of data, acknowledged: standardized interior dimensions—rear legroom, shoulder room, headroom—are not included in the dimensional source used for this article, and Audi does not publish them consistently from one generation to the next. We will therefore not invent them. The only reliable measurement remains the one you will take yourself, sitting in the rear seat behind your own driving position, tape measure in hand.

FAQ dimensions: trunk, weight, tracks, and missing dimensions

Twelve numbered questions about Audi A4 dimensions, with a direct answer and, when the data does not exist in our source, an answer that says so.

What is the exact length of the Audi A4 according to the generation?

The data shows 4,479 mm on the B5, 4,548 mm on the B6, 4,586 to 4,601 mm on the B7 depending on the source and body style, 4,703 mm on the B8 (4,701 mm after the facelift), 4,726 mm on the B9, and 4,762 mm on the facelifted B9. That is 283 mm gained between 1994 and 2025.

What is the width of the Audi A4 with mirrors deployed?

2,022 mm on all B9 body styles, 2,040 mm on the facelifted B8, 2,003 mm on the facelifted B8 allroad, and 1,937 mm on the B7. The dimension is not published for the B5 and B6 in the consulted source. The 2,080 mm figure often cited is a safety margin, not a manufacturer's dimension.

What is the trunk volume of the Audi A4 Avant in liters?

505 liters with the rear seat raised and 1,510 liters with it folded down on the pre-2019 B9 Avant; 495 and 1,495 liters after the facelift. On the B8 Avant, 490 and 1,430 liters. On the B6 and B7 Avant, 442 and 1,184 liters.

Does the Audi A4 Avant always have a larger trunk than the sedan?

No. With the rear seat raised, the B6 sedan (445 L) and B7 (460 L) exceed their contemporary Avant (442 L). The estate's advantage only appears once the rear seat is folded down, where it goes from 720 to 1,184 liters.

What is the empty weight of an Audi A4?

It depends entirely on the engine. The data ranges from 1,335 kg on a B5 2.8 V6 to 1,730 kg on a B9 Avant 50 TDI quattro. For your specific vehicle, the authoritative value is that of the certificate of conformity, not a generation average.

What roof load does an Audi A4 accept?

90 kg from the B8 onwards, 75 kg on the B7 according to the data. These 90 kg include the bars (4 to 6 kg) and the roof box (15 to 20 kg): about 65 kg of payload remains.

What is the Audi A4's braked towing capacity?

1,900 kg on the B8 and B9 versions listed, 1,800 kg on the B7. The unbraked trailer is given as 750 kg everywhere the source provides it.

What are the front and rear track widths of the Audi A4 B8?

1,564 mm at the front and 1,551 mm at the rear on the B8 sedan and Avant, 1,583 and 1,574 mm on the B8 allroad. On the B9, 1,572 mm at the front and 1,555 mm at the rear in the sedan.

What is the wheel bolt pattern of an Audi A4 B8?

This value is not included in the dimensional sheet we collected, and we will not reproduce it from memory: an error in the center bore or offset makes the front end vibrate. Read the bolt pattern stamped on the back of the original wheel and measure the center bore with a caliper on the hub.

Did the 2019 facelift change the dimensions of the B9?

Yes: 36 mm in length and 5 mm in width, with an unchanged wheelbase of 2,820 mm. The gain went entirely into the overhangs, therefore into the style, not into the interior space.

Is the Audi A4 allroad taller than the Avant?

Yes, by about 5 centimeters: 1,493 to 1,495 mm compared to 1,442 mm for a B9 Avant. This is a point of caution in older underground car parks with a 1.80 m height limit.

Which generation of Audi A4 fits in a narrow garage?

The B5, with a body width of 1,733 mm, is the narrowest in the range. At the other end, it is the facelifted B8 that is the bulkiest with mirrors deployed (2,040 mm), ahead of the B9 (2,022 mm) — the opposite of what the body width suggests.

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Conclusion: choose your Audi A4 carefully according to your actual constraints

The dimensions of the Audi A4 have evolved considerably since its launch in 1994, going from a compact size to a significantly more imposing and livable premium sedan. Each generation offers a different compromise between ease of parking, interior space, and onboard technology, to be chosen according to your actual garage, family, and budget constraints. Whatever generation you choose, it is time to move on to the aesthetic customization of your Audi A4. Discover our selection of performance accessories dedicated to the brand, lips, spoilers, diffusers, and styling elements designed to enhance your A4 without ever compromising its approval.

Discover the Audi performance accessories collection