| Model Year | 2009 | 2014 | |
| Model | BMW Z4 | Mercedes-Benz B-Class | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 2dr Hardtop conv. | 4dr Hatch | |
| Difference | |||
| Wheelbase | 98.3 in | 106.3 in | -8 in |
| Length | 166.9 in | 171.6 in | -4.7 in |
| Width | 70.5 in | 70.3 in | 0.2 in |
| Height | 50.8 in | 61.3 in | -10.5 in |
| Curb Weight | 3241 lb. | 3924 lb. | -683 lb. |
| Fuel Capacity | 14.5 gal. | 0.0 gal. | 14.5 gal. |
| Headroom, Row 1 | 39.1 in | 0.0 in | 39.1 in |
| Shoulder Room, Row 1 | 53.3 in | 0.0 in | 53.3 in |
| Legroom, Row 1 | 42.2 in | 0.0 in | 42.2 in |
| Total Legroom | 42.2 in (over 1 rows) | 0 in (over 1 rows) | 42.2 in |
| Cargo Volume, Minimum | 10.9 ft3 | 21.0 ft3 | -10.1 ft3 |
| Cargo Volume, Maximum | 10.9 ft3 | 51.4 ft3 | -40.5 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 2014 Mercedes-Benz B-Class.