| Model Year | 2007 | 2007 | |
| Model | Mercedes-Benz R-Class | Porsche Boxster | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr SUV | 2dr Convertible | |
| Difference | |||
| Wheelbase | 126.6 in | 95.1 in | 31.5 in |
| Length | 203.0 in | 170.4 in | 32.6 in |
| Width | 75.7 in | 70.9 in | 4.8 in |
| Height | 65.4 in | 51.0 in | 14.4 in |
| Curb Weight | 4829 lb. | 2855 lb. | 1974 lb. |
| Fuel Capacity | 25.1 gal. | 17.0 gal. | 8.1 gal. |
| Headroom, Row 1 | 39.8 in | 38.4 in | 1.4 in |
| Shoulder Room, Row 1 | 60.3 in | 51.7 in | 8.6 in |
| Hip Room, Row 1 | 0.0 in | 53.4 in | -53.4 in |
| Legroom, Row 1 | 39.8 in | 41.6 in | -1.8 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) | 41.6 in (over 1 rows) | 66.8 in |
| Cargo Volume, Minimum | 15.3 ft3 | 9.9 ft3 | 5.4 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 |
| 2007 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 |
| 2006 | 4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD |
The STANDARD leather seating surfaces on the 2006 front seats - way better feel than artico leather. The adjustment range to get things just right and the head rest. Very cozy. see full Mercedes-Benz R-Class review |
| 2006 | 4dr SUV 302-horsepower 5.0L V8 7-speed shiftable automatic AWD |
3 row seating see full Mercedes-Benz R-Class review |
| 2006 | 4dr SUV 268-horsepower 3.5L V6 7-speed shiftable automatic AWD |
This has to be, by far, the roomiest Mercedes period. Back seat comfort, even in the third row, is unmatched. see full Mercedes-Benz R-Class review |
| 2006 | 4dr SUV 302-horsepower 5.0L V8 7-speed shiftable automatic AWD |
Seating for 6. Great for kids. Easy to get into. see full Mercedes-Benz R-Class review |
| 2007 Porsche Boxster Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2006 | 2dr Convertible 240-horsepower 2.7L H6 5-speed manual RWD |
sport seats provide a lot of support see full Porsche Boxster review |
| 2007 Porsche Boxster Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2006 | 2dr Convertible 240-horsepower 2.7L H6 5-speed manual RWD |
no rear seat see full Porsche Boxster review |