Length, width, height, wheelbase, trunk volume: the dimensions of a premium compact determine both the ease of parking in the city and comfort on the highway. The Audi A3 comes in several body styles, and the differences between the Sportback, Sedan, and allstreet are not limited to just a few centimeters. This guide compares the key measurements of each variant to identify the one that suits a specific use.
Exterior dimensions of the Audi A3 by body style: comparison table
Before detailing the practical implications of each measurement, a summary table allows for a visual comparison of the differences between the three body styles currently available in the A3 range.
| Feature | A3 Sportback | A3 Sedan | A3 allstreet |
|---|---|---|---|
| Length | 4.35 m | Longer than the Sportback | Comparable to the Sportback |
| Width (excluding mirrors) | 1.81 m | 1.82 m | Slightly higher |
| Width (mirrors deployed) | 1.98 m | 1.98 m | Similar |
| Height | 1.44 m | 1.43 m | +3 cm vs Sportback |
| Wheelbase | 2.63 m | 2.63 m | 2.63 m |
| Ground clearance | Standard | Standard | +3 cm vs Sportback |
The wheelbase remains the same across all three variants. This is a point often overlooked: the Sedan gains its extra length solely on the rear overhang, not on the rear passenger legroom.
To delve deeper into this data, the dimensions of the Audi A3 on Full Press detail each measurement according to recent model years.
Audi A3 trunk: the difference that changes with the engine
The trunk volume is the data that varies the most from one version to another, and the body style is not the only factor. The plug-in hybrid engine significantly alters the situation.
The plug-in hybrid TFSI e version has a reduced trunk volume of 380 liters, according to the data published by the Genin Group for values dated June 2026. The battery housed under the floor eats into a significant volume, resulting in a raised trunk floor and reduced usable depth, complicating the loading of bulky items like a stroller or a golf bag.
- TFSI e engine (plug-in hybrid): trunk limited to 380 l, floor raised by the battery
- A3 Sedan: the extended rear overhang benefits the trunk more than the rear cabin
The WLTP electric range of the TFSI e is reported to be between 126 and 142 km (Genin Group data, June 2026). The trade-off between zero-emission range and trunk volume should therefore be clearly stated before signing the order form.
Audi A3 allstreet: a ground clearance that changes daily use
Launched in 2024, the A3 allstreet takes the base of the Sportback with a crossover treatment. Audi announces a ground clearance that is 3 cm higher and an elevated driving position. The exterior dimensions remain close to those of the Sportback, preserving maneuverability in the city.
These three additional centimeters do not turn the A3 into an SUV. They facilitate the crossing of speed bumps, high curbs, and slightly degraded paths. For a driver alternating between city center and poorly maintained country roads, the difference is felt daily.
The higher driving position also alters the perception of the road. The angle of view over the hood and mirrors provides a greater sense of control in dense traffic. This ergonomic gain partly explains the commercial success of this type of raised variant in the compact segment.
Impact of dimensions on parking and city driving
With 4.35 m in length for the Sportback, the A3 remains compatible with the majority of parking spaces in the city. The longer Sedan occupies more space and complicates tight parking situations.
The width of 1.98 m with mirrors deployed is the real point of concern. In older underground parking lots, where spaces sometimes measure less than 2.30 m wide, opening the doors becomes tricky. Folding the mirrors electrically (an option or standard equipment depending on the trim) significantly reduces width encumbrance.
- Sportback: the best compromise between size and habitability for primarily urban use
- Sedan: to be preferred if parking is not a constraint and trunk volume is a priority
- allstreet: relevant for mixed city/country use thanks to the increased ground clearance
The wheelbase of 2.63 m, shared by all versions, ensures a contained turning radius. In maneuvering, the difference between Sportback and Sedan is only on the rear overhang, which mainly affects visibility when reversing.
Ultimately, the choice between these three body styles comes down to a matter of trade-off: the extra length of the Sedan benefits the trunk, not the rear space, while the allstreet sacrifices a bit of low profile for added versatility. The wheelbase and width measurements, however, remain almost identical from one version to another.
