| Model Year | 2012 | 2009 | |
| Model | Mercedes-Benz SLS AMG | BMW Z4 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 2dr Convertible | 2dr Hardtop conv. | |
| Difference | |||
| Wheelbase | 105.5 in | 98.3 in | 7.2 in |
| Length | 182.6 in | 166.9 in | 15.7 in |
| Width | 76.3 in | 70.5 in | 5.8 in |
| Height | 49.7 in | 50.8 in | -1.1 in |
| Curb Weight | 3661 lb. | 3241 lb. | 420 lb. |
| Fuel Capacity | 22.5 gal. | 14.5 gal. | 8 gal. |
| Headroom, Row 1 | 39.0 in | 39.1 in | -0.1 in |
| Shoulder Room, Row 1 | 58.4 in | 53.3 in | 5.1 in |
| Hip Room, Row 1 | 63.2 in | 0.0 in | 63.2 in |
| Legroom, Row 1 | 41.7 in | 42.2 in | -0.5 in |
| Total Legroom | 41.7 in (over 1 rows) | 42.2 in (over 1 rows) | -0.5 in |
| Cargo Volume | 6.1 ft3 | 10.9 ft3 | -4.8 ft3 |
None of our members have yet commented on the seat room and comfort of the 2012 Mercedes-Benz SLS AMG.
| 2009 BMW Z4 Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2009 | 2dr Hardtop conv. 255-horsepower 3.0L I6 6-speed shiftable automatic RWD |
no back seats see full BMW Z4 review |