| Model Year | 2010 | 2012 | |
| Model | Audi A4 / S4 | Mercedes-Benz R-Class | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Wagon | 4dr SUV | |
| Difference | |||
| Wheelbase | 110.6 in | 126.6 in | -16 in |
| Length | 185.2 in | 203.1 in | -17.9 in |
| Width | 71.9 in | 77.1 in | -5.2 in |
| Height | 56.5 in | 65.4 in | -8.9 in |
| Curb Weight | 3710 lb. | 4960 lb. | -1250 lb. |
| Fuel Capacity | 16.9 gal. | 21.1 gal. | -4.2 gal. |
| Headroom, Row 1 | 40.4 in | 39.8 in | 0.6 in |
| Shoulder Room, Row 1 | 55.5 in | 60.3 in | -4.8 in |
| Legroom, Row 1 | 41.3 in | 39.8 in | 1.5 in |
| Headroom, Row 2 | 38.2 in | 40.4 in | -2.2 in |
| Shoulder Room, Row 2 | 54.3 in | 59.6 in | -5.3 in |
| Legroom, Row 2 | 35.2 in | 36.2 in | -1 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 | 76.5 in (over 2 rows) | 108.4 in (over 3 rows) | -31.9 in |
| Cargo Volume, Minimum | 17.3 ft3 | 15.2 ft3 | 2.1 ft3 |
| Cargo Volume, Behind R2 | 17.3 | 42.2 ft3 | -24.9 |
| Cargo Volume, Maximum | 50.5 ft3 | 85.0 ft3 | -34.5 ft3 |
| 2010 Audi A4 / S4 Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2010 | 4dr Wagon turbocharged 211hp 2.0L I4 6-speed shiftable automatic AWD |
Huh, never have, never will sit in the back of this car...It is a hoot to drive see full Audi A4 / S4 review |
| 2010 | 4dr Sedan supercharged 333hp 3.0L V6 7-speed automated manual AWD |
Padding a bit stiff see full Audi A4 / S4 review |
| 2010 | 4dr Sedan supercharged 333hp 3.0L V6 7-speed automated manual AWD |
Too narrow see full Audi A4 / S4 review |
None of our members have yet commented on the seat room and comfort of the 2012 Mercedes-Benz R-Class.