| Model Year | 2011 | 2009 | |
| Model | Mercedes-Benz C-Class | Audi A3 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan | 4dr Hatch | |
| Difference | |||
| Wheelbase | 108.7 in | 101.5 in | 7.2 in |
| Length | 182.3 in | 168.7 in | 13.6 in |
| Width | 69.7 in | 69.5 in | 0.2 in |
| Height | 56.3 in | 56.0 in | 0.3 in |
| Curb Weight | 3527 lb. | 3263 lb. | 264 lb. |
| Fuel Capacity | 17.4 gal. | 15.0 gal. | 2.4 gal. |
| Headroom, Row 1 | 37.1 in | 38.1 in | -1 in |
| Shoulder Room, Row 1 | 54.7 in | 54.3 in | 0.4 in |
| Hip Room, Row 1 | 52.3 in | 0.0 in | 52.3 in |
| Legroom, Row 1 | 41.7 in | 41.2 in | 0.5 in |
| Headroom, Row 2 | 36.9 in | 36.9 in | 0 in |
| Shoulder Room, Row 2 | 55.1 in | 52.8 in | 2.3 in |
| Hip Room, Row 2 | 54.9 in | 0.0 in | 54.9 in |
| Legroom, Row 2 | 33.4 in | 34.8 in | -1.4 in |
| Total Legroom | 75.1 in (over 2 rows) | 76 in (over 2 rows) | -0.9 in |
| Cargo Volume, Minimum | 12.4 ft3 | 13.1 ft3 | -0.7 ft3 |
| Cargo Volume, Maximum | 12.4 ft3 | 54.6 ft3 | -42.2 ft3 |
| 2011 Mercedes-Benz C-Class Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2010 | 4dr Sedan 268-horsepower 3.5L V6 7-speed shiftable automatic RWD |
This car has a very small back seat. If you want to carry passengers for a long distance, get an E class. see full Mercedes-Benz C-Class review |
| 2009 Audi A3 Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2009 | 4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual FWD |
A lot less leg room when compared to the GTI, but the rear hatch space is bigger. see full Audi A3 review |
| 2008 | 4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual FWD |
Really just a 4 place vehicle...3 across in the rear is not comfortably possible. see full Audi A3 review |
| 2008 | 4dr Hatch turbocharged 200hp 2.0L I4 6-speed automated manual FWD |
Slightly too close to each other in arm room. see full Audi A3 review |