| Model Year | 2007 | 2021 | |
| Model | Acura RL | Audi A8 / S8 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan | 4dr Sedan, ext. | |
| Difference | |||
| Wheelbase | 2,799 mm | 3,129 mm | -1 mm |
| Length | 4,917 mm | 5,301 mm | -1 mm |
| Width | 1,834 mm | 1,946 mm | 0 mm |
| Height | 1,450 mm | 1,488 mm | 0 mm |
| Curb Weight | 1,820 kg | 2,165 kg | -1 kg |
| Fuel Capacity | 73 L | 82 L | -9 L |
| Headroom, Row 1 | 978 mm | 973 mm | 5 mm |
| Shoulder Room, Row 1 | 1,486 mm | 1,501 mm | 0 mm |
| Hip Room, Row 1 | 1,400 mm | 0 mm | 1 mm |
| Legroom, Row 1 | 1,077 mm | 1,054 mm | 0 mm |
| Headroom, Row 2 | 945 mm | 978 mm | -33 mm |
| Shoulder Room, Row 2 | 1,425 mm | 1,463 mm | 0 mm |
| Hip Room, Row 2 | 1,372 mm | 0 mm | 1 mm |
| Legroom, Row 2 | 922 mm | 1,125 mm | 921 mm |
| Total Legroom | 1,999 mm (over 2 rows) | 2,179 mm (over 2 rows) | -1 mm |
| Cargo Volume | 371 L | 354 L | 17 L |
| 2007 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 |
None of our members have yet commented on the seat room and comfort of the 2021 Audi A8 / S8.