| Model Year | 2015 | 2010 | |
| Model | Mercedes-Benz C-Class | Porsche Cayman | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 2dr Coupe | 2dr Hatch | |
| Difference | |||
| Wheelbase | 108.7 in | 95.1 in | 13.6 in |
| Length | 180.7 in | 171.1 in | 9.6 in |
| Width | 69.7 in | 70.9 in | -1.2 in |
| Height | 54.8 in | 51.4 in | 3.4 in |
| Curb Weight | 3538 lb. | 2976 lb. | 562 lb. |
| Fuel Capacity | 15.6 gal. | 16.9 gal. | -1.3 gal. |
| Headroom, Row 1 | 37.0 in | 0.0 in | 37 in |
| Shoulder Room, Row 1 | 54.0 in | 0.0 in | 54 in |
| Legroom, Row 1 | 42.0 in | 0.0 in | 42 in |
| Headroom, Row 2 | 35.5 in | 0.0 in | 35.5 in |
| Shoulder Room, Row 2 | 50.3 in | 0.0 in | 50.3 in |
| Legroom, Row 2 | 33.0 in | 0.0 in | 33 in |
| Total Legroom | 75 in (over 2 rows) | 0 in (over 1 rows) | 75 in |
| Cargo Volume | 11.7 ft3 | 14.5 ft3 | -2.8 ft3 |
None of our members have yet commented on the seat room and comfort of the 2015 Mercedes-Benz C-Class.
None of our members have yet commented on the seat room and comfort of the 2010 Porsche Cayman.