| Model Year | 2023 | 2009 | |
| Model | BMW Z4 | Mercedes-Benz R-Class | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 2dr Convertible | 4dr SUV | |
| Difference | |||
| Wheelbase | 97.2 in | 126.6 in | -29.4 in |
| Length | 170.7 in | 203.0 in | -32.3 in |
| Width | 73.4 in | 75.7 in | -2.3 in |
| Height | 51.4 in | 65.4 in | -14 in |
| Curb Weight | 3287 lb. | 4829 lb. | -1542 lb. |
| Fuel Capacity | 13.7 gal. | 25.1 gal. | -11.4 gal. |
| Headroom, Row 1 | 38.9 in | 39.8 in | -0.9 in |
| Shoulder Room, Row 1 | 54.3 in | 60.3 in | -6 in |
| Legroom, Row 1 | 42.2 in | 39.8 in | 2.4 in |
| Headroom, Row 2 | 0.0 in | 40.4 in | -40.4 in |
| Shoulder Room, Row 2 | 0.0 in | 59.6 in | -59.6 in |
| Legroom, Row 2 | 0.0 in | 36.2 in | -36.2 in |
| Headroom, Row 3 | 0.0 in | 37.2 in | -37.2 in |
| Shoulder Room, Row 3 | 0.0 in | 52.8 in | -52.8 in |
| Legroom, Row 3 | 0.0 in | 32.4 in | -32.4 in |
| Total Legroom | 42.2 in (over 1 rows) | 108.4 in (over 3 rows) | -66.2 in |
| Cargo Volume, Minimum | 9.9 ft3 | 15.3 ft3 | -5.4 ft3 |
| Cargo Volume, Behind R2 | 9.9 | 42.2 ft3 | -32.3 |
| Cargo Volume, Maximum | 9.9 ft3 | 85.0 ft3 | -75.1 ft3 |
None of our members have yet commented on the seat room and comfort of the 2023 BMW Z4.
| 2009 Mercedes-Benz R-Class Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2008 | 4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD |
Very roomie see full Mercedes-Benz R-Class review |
| 2009 Mercedes-Benz R-Class Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2009 | 4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD |
Three different lumbar pumps...don't seem to be very different in what is inflated. see full Mercedes-Benz R-Class review |