| Model Year | 2008 | 2013 | |
| Model | Mercedes-Benz R-Class | BMW Z4 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr SUV | 2dr Hardtop conv. | |
| Difference | |||
| Wheelbase | 126.6 in | 98.3 in | 28.3 in |
| Length | 203.0 in | 166.9 in | 36.1 in |
| Width | 75.7 in | 70.5 in | 5.2 in |
| Height | 65.4 in | 50.8 in | 14.6 in |
| Curb Weight | 4829 lb. | 3263 lb. | 1566 lb. |
| Fuel Capacity | 25.1 gal. | 14.5 gal. | 10.6 gal. |
| Headroom, Row 1 | 39.8 in | 39.1 in | 0.7 in |
| Shoulder Room, Row 1 | 60.3 in | 53.3 in | 7 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 | 15.3 ft3 | 10.9 ft3 | 4.4 ft3 |
| Cargo Volume, Behind R2 | 42.2 ft3 | 10.9 | 31.3 ft3 |
| Cargo Volume, Maximum | 85.0 ft3 | 10.9 ft3 | 74.1 ft3 |
| 2008 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 |
| 2007 | 4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD |
3rd row seats are big enough and comfortable enough for an adult. 2nd row seats are the best captain chairs I have ever sat in in a car. Glass roof gives additional room appearance. see full Mercedes-Benz R-Class review |
| 2007 | 4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD |
Great front view, comfortable seats. see full Mercedes-Benz R-Class review |
| 2007 | 4dr SUV 302-horsepower 5.0L V8 7-speed shiftable automatic AWD |
There is excellent legroom in the middle and rear seats. All four recline. see full Mercedes-Benz R-Class review |
| 2007 | 4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD |
Outstanding room in the second row- tons of leg room. Very comfortable see full Mercedes-Benz R-Class review |
| 2008 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 |
None of our members have yet commented on the seat room and comfort of the 2013 BMW Z4.