| Model Year | 2007 | 2011 | |
| Model | Audi A8 / S8 | Mercedes-Benz SLS AMG | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan | 2dr Coupe | |
| Difference | |||
| Wheelbase | 115.9 in | 105.5 in | 10.4 in |
| Length | 199.3 in | 182.6 in | 16.7 in |
| Width | 74.6 in | 76.3 in | -1.7 in |
| Height | 56.9 in | 49.3 in | 7.6 in |
| Curb Weight | 4288 lb. | 3573 lb. | 715 lb. |
| Fuel Capacity | 23.8 gal. | 22.4 gal. | 1.4 gal. |
| Headroom, Row 1 | 37.3 in | 39.0 in | -1.7 in |
| Shoulder Room, Row 1 | 59.1 in | 58.4 in | 0.7 in |
| Hip Room, Row 1 | 0.0 in | 63.2 in | -63.2 in |
| Legroom, Row 1 | 41.4 in | 41.7 in | -0.3 in |
| Headroom, Row 2 | 38.0 in | 0.0 in | 38 in |
| Shoulder Room, Row 2 | 57.5 in | 0.0 in | 57.5 in |
| Legroom, Row 2 | 37.6 in | 0.0 in | 37.6 in |
| Total Legroom | 79 in (over 2 rows) | 41.7 in (over 1 rows) | 37.3 in |
| Cargo Volume | 14.6 ft3 | 6.2 ft3 | 8.4 ft3 |
None of our members have yet commented on the seat room and comfort of the 2007 Audi A8 / S8.
None of our members have yet commented on the seat room and comfort of the 2011 Mercedes-Benz SLS AMG.