| Model Year | 2023 | 2009 | |
| Model | Mercedes-Benz SL | BMW Z4 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 2dr Convertible | 2dr Hardtop conv. | |
| Difference | |||
| Wheelbase | 106.3 in | 98.3 in | 8 in |
| Length | 185.2 in | 166.9 in | 18.3 in |
| Width | 75.4 in | 70.5 in | 4.9 in |
| Height | 53.5 in | 50.8 in | 2.7 in |
| Curb Weight | 3990 lb. | 3241 lb. | 749 lb. |
| Fuel Capacity | 18.5 gal. | 14.5 gal. | 4 gal. |
| Headroom, Row 1 | 37.7 in | 39.1 in | -1.4 in |
| Shoulder Room, Row 1 | 56.3 in | 53.3 in | 3 in |
| Legroom, Row 1 | 41.5 in | 42.2 in | -0.7 in |
| Headroom, Row 2 | 32.7 in | 0.0 in | 32.7 in |
| Shoulder Room, Row 2 | 44.1 in | 0.0 in | 44.1 in |
| Total Legroom | 41.5 in (over 1 rows) | 42.2 in (over 1 rows) | -0.7 in |
| Cargo Volume | 7.5 ft3 | 10.9 ft3 | -3.4 ft3 |
None of our members have yet commented on the seat room and comfort of the 2023 Mercedes-Benz SL.
| 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 |