Size comparison · drawn to scale
Mercedes-Benz C-Class W206 vs Audi A4 B9: size comparison
- Length C-Class W206 25 mm1 in longer
- Width A4 B9 22 mm0.9 in wider
- Height C-Class W206 11 mm0.4 in taller
- Boot A4 B9 5 L0.2 cu ft more
Car 1 blue, solid outline

Car 2 coral, dashed outline
Change cars
Zoom in to read the measurements - or see the table below.
Scale about 1:21 on a desktop screen · grid 500 mm1 ft · in Overlay both cars start at the front bumper Side view: dashed lines mark the axles Front view: width without mirrors Top view: footprint on the road
Dimensions and difference
The C-Class W206 is 25 mm1 in longer, 22 mm0.9 in narrower and 11 mm0.4 in taller than the A4 B9. Its wheelbase is 45 mm2 in longer.
| Dimension | C-Class W206 | A4 B9 | Difference, car 1 vs car 2 |
|---|---|---|---|
| Length | 4,751 mm15 ft 7 in15 ft 7 in4,751 mm | 4,726 mm15 ft 6 in15 ft 6 in4,726 mm | +25 mm+1 in +0.5% |
| Width | 1,820 mm6 ft 0 in6 ft 0 in1,820 mm | 1,842 mm6 ft 1 in6 ft 1 in1,842 mm | −22 mm−0.9 in −1.2% |
| Height | 1,438 mm4 ft 9 in4 ft 9 in1,438 mm | 1,427 mm4 ft 8 in4 ft 8 in1,427 mm | +11 mm+0.4 in +0.8% |
| Wheelbase | 2,865 mm9 ft 5 in9 ft 5 in2,865 mm | 2,820 mm9 ft 3 in9 ft 3 in2,820 mm | +45 mm+2 in +1.6% |
| Footprint | 8.65 m²93.1 sq ft93.1 sq ft8.65 m² | 8.71 m²93.7 sq ft93.7 sq ft8.71 m² | −0.06 m²−0.6 sq ft −0.7% |
| Boot | 455 L16.1 cu ft16.1 cu ft455 L | 460 L16.2 cu ft16.2 cu ft460 L | −5 L−0.2 cu ft −1.1% |
| Kerb weight | 1,650–1,824 kg3,638–4,021 lb3,638–4,021 lb1,650–1,824 kg | 1,485–1,685 kg3,274–3,715 lb3,274–3,715 lb1,485–1,685 kg | +165 kg+364 lb +11.1% |
Width without mirrors. Figures come from the catalog version pages; the drawing uses the same numbers. Body outlines are generic for the body type - proportions are exact, styling is not. Weight difference compares the lightest versions.
Garage and parking
A typical single garage is about 5.5 × 3.0 m18 ft 1 in × 9 ft 10 in inside; a parking bay about 5.0 × 2.5 m16 ft 5 in × 8 ft 2 in. Room to open a door: about 600 mm2 ft each side.
C-Class W206
- Single garage
- Tight 749 mm2 ft 5 in to spare in length, 590 mm1 ft 11 in each side
- Parking bay
- Tight 249 mm10 in to spare in length, 340 mm1 ft 1 in each side
A4 B9
- Single garage
- Tight 774 mm2 ft 6 in to spare in length, 579 mm1 ft 11 in each side
- Parking bay
- Tight 274 mm11 in to spare in length, 329 mm1 ft 1 in each side
Frequently asked questions
Which is bigger, the Mercedes-Benz C-Class W206 or the Audi A4 B9?
The Audi A4 B9 is the bigger car by footprint (length × width). The C-Class W206 is 25 mm longer, 22 mm narrower and 11 mm taller than the A4 B9. Its wheelbase is 45 mm longer.
Will the Mercedes-Benz C-Class W206 and the Audi A4 B9 fit in a standard garage?
In a typical single garage of 5.5 × 3.0 m inside: The Mercedes-Benz C-Class W206 fits, but it is tight to get out (749 mm to spare in length, 590 mm each side). The Audi A4 B9 fits, but it is tight to get out (774 mm to spare in length, 579 mm each side). Widths are without mirrors; check your own garage with our garage checker.
Which has the bigger boot?
The Audi A4 B9: 460 L against 455 L in the Mercedes-Benz C-Class W206 (seats up, as quoted by the maker).
Drawn to one scale
Both cars use the same millimetre grid, so a longer bonnet or a taller roof shows exactly as it is.
Wheels at the real wheelbase
Dashed lines mark the axles. In Overlay both cars start at the front bumper; car 2 has a dashed outline.
Will it fit my garage?
Switch to Top view, or to feet and inches if your garage plan is in feet. Allow about 600 mm (2 ft) for opening the doors.
