| Model Year | 2011 | 2007 | |
| Model | Mercedes-Benz SL | Audi A8 / S8 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 2dr Hardtop conv. | 4dr Sedan | |
| Difference | |||
| Wheelbase | 100.8 in | 115.9 in | -15.1 in |
| Length | 180.4 in | 199.3 in | -18.9 in |
| Width | 71.5 in | 74.6 in | -3.1 in |
| Height | 51.1 in | 56.9 in | -5.8 in |
| Curb Weight | 4220 lb. | 4288 lb. | -68 lb. |
| Fuel Capacity | 21.1 gal. | 23.8 gal. | -2.7 gal. |
| Headroom, Row 1 | 37.7 in | 37.3 in | 0.4 in |
| Shoulder Room, Row 1 | 54.0 in | 59.1 in | -5.1 in |
| Hip Room, Row 1 | 53.9 in | 0.0 in | 53.9 in |
| Legroom, Row 1 | 42.9 in | 41.4 in | 1.5 in |
| Headroom, Row 2 | 0.0 in | 38.0 in | -38 in |
| Shoulder Room, Row 2 | 0.0 in | 57.5 in | -57.5 in |
| Legroom, Row 2 | 0.0 in | 37.6 in | -37.6 in |
| Total Legroom | 42.9 in (over 1 rows) | 79 in (over 2 rows) | -36.1 in |
| Cargo Volume, Minimum | 7.2 ft3 | 14.6 ft3 | -7.4 ft3 |
| Cargo Volume, Maximum | 10.2 ft3 | 14.6 ft3 | -4.4 ft3 |
None of our members have yet commented on the seat room and comfort of the 2011 Mercedes-Benz SL.
None of our members have yet commented on the seat room and comfort of the 2007 Audi A8 / S8.