| Model Year | 2015 | 2011 | |
| Model | Audi A8 / S8 | Lexus IS | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan | 4dr Sedan | |
| Difference | |||
| Wheelbase | 117.8 in | 107.5 in | 10.3 in |
| Length | 202.2 in | 180.1 in | 22.1 in |
| Width | 76.7 in | 70.9 in | 5.8 in |
| Height | 57.5 in | 56.1 in | 1.4 in |
| Curb Weight | 4365 lb. | 3455 lb. | 910 lb. |
| Fuel Capacity | 21.7 gal. | 17.2 gal. | 4.5 gal. |
| Headroom, Row 1 | 37.2 in | 37.2 in | 0 in |
| Shoulder Room, Row 1 | 59.1 in | 54.4 in | 4.7 in |
| Hip Room, Row 1 | 0.0 in | 54.1 in | -54.1 in |
| Legroom, Row 1 | 41.4 in | 43.9 in | -2.5 in |
| Headroom, Row 2 | 38.1 in | 36.7 in | 1.4 in |
| Shoulder Room, Row 2 | 57.8 in | 52.7 in | 5.1 in |
| Hip Room, Row 2 | 0.0 in | 53.7 in | -53.7 in |
| Legroom, Row 2 | 38.7 in | 30.6 in | 8.1 in |
| Total Legroom | 80.1 in (over 2 rows) | 74.5 in (over 2 rows) | 5.6 in |
| Cargo Volume | 14.2 ft3 | 13.0 ft3 | 1.2 ft3 |
None of our members have yet commented on the seat room and comfort of the 2015 Audi A8 / S8.
| 2011 Lexus IS Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2010 | 4dr Sedan 204-horsepower 2.5L V6 6-speed shiftable automatic RWD |
Legroom felt narrow for passenger over tranny tunnel. see full Lexus IS review |
| 2010 | 4dr Sedan 204-horsepower 2.5L V6 6-speed shiftable automatic AWD |
Lousey seats: uncomfortable and build is cheap and not conforming to human posture. But, seems last several years most cars have lousey, cheap and uncomfortable seats. see full Lexus IS review |