| Model Year | 2009 | 2010 | |
| Model | BMW Z4 | Mercedes-Benz M-Class | |
| Engine | turbocharged 3.0L I6 DOHC-4v 300 hp@5800 300 lb-ft@1400 |
6.2L V8 DOHC-4v 503 hp@6800 465 lb-ft@5200 |
|
| Transmission | 7-speed automated manual | 7-speed shiftable automatic | |
| Drivetrain | RWD | AWD | |
| Body | 2dr Hardtop conv. | 4dr SUV | |
| Difference | |||
| Wheelbase | 98.3 in | 114.7 in | -16.4 in |
| Length | 166.9 in | 188.5 in | -21.6 in |
| Width | 70.5 in | 75.2 in | -4.7 in |
| Height | 50.8 in | 70.1 in | -19.3 in |
| Curb Weight | 3494 lb. | 5093 lb. | -1599 lb. |
| Fuel Capacity | 14.5 gal. | 25.1 gal. | -10.6 gal. |
| Headroom, Row 1 | 39.1 in | 39.9 in | -0.8 in |
| Shoulder Room, Row 1 | 53.3 in | 59.9 in | -6.6 in |
| Hip Room, Row 1 | 0.0 in | 55.9 in | -55.9 in |
| Legroom, Row 1 | 42.2 in | 42.2 in | 0 in |
| Headroom, Row 2 | 0.0 in | 39.8 in | -39.8 in |
| Shoulder Room, Row 2 | 0.0 in | 59.8 in | -59.8 in |
| Hip Room, Row 2 | 0.0 in | 56.2 in | -56.2 in |
| Legroom, Row 2 | 0.0 in | 40.0 in | -40 in |
| Total Legroom | 42.2 in (over 1 rows) | 82.2 in (over 2 rows) | -40 in |
| Cargo Volume, Minimum | 10.9 ft3 | 29.4 ft3 | -18.5 ft3 |
| Cargo Volume, Maximum | 10.9 ft3 | 72.4 ft3 | -61.5 ft3 |
| 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 |
None of our members have yet commented on the seat room and comfort of the 2010 Mercedes-Benz M-Class.