| Model Year | 2012 | 2022 | |
| Model | Mercedes-Benz R-Class | BMW Z4 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr SUV | 2dr Convertible | |
| Difference | |||
| Wheelbase | 126.6 in | 97.2 in | 29.4 in |
| Length | 203.1 in | 170.7 in | 32.4 in |
| Width | 77.1 in | 73.4 in | 3.7 in |
| Height | 65.4 in | 51.4 in | 14 in |
| Curb Weight | 4960 lb. | 3287 lb. | 1673 lb. |
| Fuel Capacity | 21.1 gal. | 13.7 gal. | 7.4 gal. |
| Headroom, Row 1 | 39.8 in | 38.9 in | 0.9 in |
| Shoulder Room, Row 1 | 60.3 in | 54.3 in | 6 in |
| Legroom, Row 1 | 39.8 in | 42.2 in | -2.4 in |
| Headroom, Row 2 | 40.4 in | 0.0 in | 40.4 in |
| Shoulder Room, Row 2 | 59.6 in | 0.0 in | 59.6 in |
| Legroom, Row 2 | 36.2 in | 0.0 in | 36.2 in |
| Headroom, Row 3 | 37.2 in | 0.0 in | 37.2 in |
| Shoulder Room, Row 3 | 52.8 in | 0.0 in | 52.8 in |
| Legroom, Row 3 | 32.4 in | 0.0 in | 32.4 in |
| Total Legroom | 108.4 in (over 3 rows) | 42.2 in (over 1 rows) | 66.2 in |
| Cargo Volume, Minimum | 15.2 ft3 | 9.9 ft3 | 5.3 ft3 |
| Cargo Volume, Behind R2 | 42.2 ft3 | 9.9 | 32.3 ft3 |
| Cargo Volume, Maximum | 85.0 ft3 | 9.9 ft3 | 75.1 ft3 |
None of our members have yet commented on the seat room and comfort of the 2012 Mercedes-Benz R-Class.
None of our members have yet commented on the seat room and comfort of the 2022 BMW Z4.