| Model Year | 2006 | 2010 | |
| Model | Acura RL | Audi A4 / S4 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan | 4dr Sedan | |
| Difference | |||
| Wheelbase | 110.2 in | 110.6 in | -0.4 in |
| Length | 193.6 in | 185.2 in | 8.4 in |
| Width | 72.2 in | 71.9 in | 0.3 in |
| Height | 57.1 in | 56.2 in | 0.9 in |
| Curb Weight | 4012 lb. | 3590 lb. | 422 lb. |
| Fuel Capacity | 19.4 gal. | 16.9 gal. | 2.5 gal. |
| Headroom, Row 1 | 38.5 in | 40.0 in | -1.5 in |
| Shoulder Room, Row 1 | 58.5 in | 55.5 in | 3 in |
| Hip Room, Row 1 | 55.1 in | 0.0 in | 55.1 in |
| Legroom, Row 1 | 42.4 in | 41.3 in | 1.1 in |
| Headroom, Row 2 | 37.2 in | 37.5 in | -0.3 in |
| Shoulder Room, Row 2 | 56.1 in | 54.3 in | 1.8 in |
| Hip Room, Row 2 | 54.0 in | 0.0 in | 54 in |
| Legroom, Row 2 | 36.3 in | 35.2 in | 1.1 in |
| Total Legroom | 78.7 in (over 2 rows) | 76.5 in (over 2 rows) | 2.2 in |
| Cargo Volume | 13.1 ft3 | 12.4 ft3 | 0.7 ft3 |
| 2006 Acura RL Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2007 | 4dr Sedan 290-horsepower 3.5L V6 5-speed shiftable automatic AWD |
A little tight up front especially when compared to the M35 which is very roomy. see full Acura RL review |
| 2007 | 4dr Sedan 290-horsepower 3.5L V6 5-speed shiftable automatic AWD |
Again, tight when compared to the M35. see full Acura RL review |
| 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 |