| Model Year | 2017 | 2018 | |
| Model | Mercedes-Benz C-Class | Porsche 911 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 2dr Coupe | 2dr Coupe | |
| Difference | |||
| Wheelbase | 111.8 in | 96.5 in | 15.3 in |
| Length | 184.5 in | 177.1 in | 7.4 in |
| Width | 71.3 in | 71.2 in | 0.1 in |
| Height | 55.3 in | 50.9 in | 4.4 in |
| Curb Weight | 3638 lb. | 3153 lb. | 485 lb. |
| Fuel Capacity | 17.4 gal. | 16.9 gal. | 0.5 gal. |
| Headroom, Row 1 | 38.8 in | 0.0 in | 38.8 in |
| Shoulder Room, Row 1 | 54.8 in | 0.0 in | 54.8 in |
| Legroom, Row 1 | 42.0 in | 0.0 in | 42 in |
| Headroom, Row 2 | 35.6 in | 0.0 in | 35.6 in |
| Shoulder Room, Row 2 | 51.7 in | 0.0 in | 51.7 in |
| Legroom, Row 2 | 32.0 in | 0.0 in | 32 in |
| Total Legroom | 74 in (over 2 rows) | 0 in (over 1 rows) | 74 in |
| Cargo Volume, Minimum | 10.5 ft3 | 5.1 ft3 | 5.4 ft3 |
| Cargo Volume, Maximum | 10.5 ft3 | 14.3 ft3 | -3.8 ft3 |
None of our members have yet commented on the seat room and comfort of the 2017 Mercedes-Benz C-Class.
None of our members have yet commented on the seat room and comfort of the 2018 Porsche 911.