| Model Year | 2013 | 2012 | |
| Model | Mercedes-Benz C-Class | Audi A6 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan | 4dr Sedan | |
| Difference | |||
| Wheelbase | 108.7 in | 114.7 in | -6 in |
| Length | 180.7 in | 193.9 in | -13.2 in |
| Width | 69.7 in | 73.8 in | -4.1 in |
| Height | 56.3 in | 57.8 in | -1.5 in |
| Curb Weight | 3428 lb. | 3682 lb. | -254 lb. |
| Fuel Capacity | 17.4 gal. | 19.8 gal. | -2.4 gal. |
| Headroom, Row 1 | 37.1 in | 37.2 in | -0.1 in |
| Shoulder Room, Row 1 | 54.7 in | 57.5 in | -2.8 in |
| Hip Room, Row 1 | 52.3 in | 0.0 in | 52.3 in |
| Legroom, Row 1 | 41.7 in | 41.3 in | 0.4 in |
| Headroom, Row 2 | 36.9 in | 37.8 in | -0.9 in |
| Shoulder Room, Row 2 | 55.0 in | 56.3 in | -1.3 in |
| Hip Room, Row 2 | 54.9 in | 0.0 in | 54.9 in |
| Legroom, Row 2 | 33.4 in | 37.4 in | -4 in |
| Total Legroom | 75.1 in (over 2 rows) | 78.7 in (over 2 rows) | -3.6 in |
| Cargo Volume | 12.4 ft3 | 14.1 ft3 | -1.7 ft3 |
None of our members have yet commented on the seat room and comfort of the 2013 Mercedes-Benz C-Class.
| 2012 Audi A6 Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2012 | 4dr Sedan supercharged 310hp 3.0L V6 8-speed shiftable automatic AWD |
Very supportive seats, nice leather, great heated seats. see full Audi A6 review |
| 2012 Audi A6 Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2011 | 4dr Sedan supercharged 300hp 3.0L V6 6-speed shiftable automatic AWD |
Rear seat room is average, no better. see full Audi A6 review |