| Model Year | 2010 | 2015 | |
| Model | BMW Z4 | Mercedes-Benz GL | |
| Engine | turbocharged 3.0L I6 DOHC-4v 300 hp@5800 300 lb-ft@1400 |
turbocharged 5.5L V8 DOHC-4v 550 hp@5750 560 lb-ft@2000 |
|
| Transmission | 7-speed automated manual | 7-speed shiftable automatic | |
| Drivetrain | RWD | AWD | |
| Body | 2dr Hardtop conv. | 4dr SUV | |
| Difference | |||
| Wheelbase | 98.3 in | 121.0 in | -22.7 in |
| Length | 166.9 in | 201.6 in | -34.7 in |
| Width | 70.5 in | 76.4 in | -5.9 in |
| Height | 50.8 in | 72.8 in | -22 in |
| Curb Weight | 3494 lb. | 5687 lb. | -2193 lb. |
| Fuel Capacity | 14.5 gal. | 26.4 gal. | -11.9 gal. |
| Headroom, Row 1 | 39.1 in | 41.2 in | -2.1 in |
| Shoulder Room, Row 1 | 53.3 in | 58.5 in | -5.2 in |
| Legroom, Row 1 | 42.2 in | 40.3 in | 1.9 in |
| Headroom, Row 2 | 0.0 in | 40.0 in | -40 in |
| Shoulder Room, Row 2 | 0.0 in | 58.3 in | -58.3 in |
| Legroom, Row 2 | 0.0 in | 38.5 in | -38.5 in |
| Headroom, Row 3 | 0.0 in | 38.9 in | -38.9 in |
| Shoulder Room, Row 3 | 0.0 in | 50.5 in | -50.5 in |
| Legroom, Row 3 | 0.0 in | 35.0 in | -35 in |
| Total Legroom | 42.2 in (over 1 rows) | 113.8 in (over 3 rows) | -71.6 in |
| Cargo Volume, Minimum | 10.9 ft3 | 16.0 ft3 | -5.1 ft3 |
| Cargo Volume, Behind R2 | 10.9 | 49.4 ft3 | -38.5 |
| Cargo Volume, Maximum | 10.9 ft3 | 93.8 ft3 | -82.9 ft3 |
| 2010 BMW Z4 Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2011 | 2dr Hardtop conv. 255-horsepower 3.0L I6 6-speed shiftable automatic RWD |
What rear seat? see full BMW Z4 review |
| 2009 | 2dr Hardtop conv. 255-horsepower 3.0L I6 6-speed shiftable automatic RWD |
no back seats see full BMW Z4 review |
None of our members have yet commented on the seat room and comfort of the 2015 Mercedes-Benz GL.