| Model Year | 2015 | 2017 | |
| Model | Audi A8 / S8 | Lexus LS | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan, ext. | 4dr Sedan, ext. | |
| Difference | |||
| Wheelbase | 122.9 in | 121.7 in | 1.2 in |
| Length | 207.4 in | 205.0 in | 2.4 in |
| Width | 76.7 in | 73.8 in | 2.9 in |
| Height | 57.9 in | 58.1 in | -0.2 in |
| Curb Weight | 4464 lb. | 4277 lb. | 187 lb. |
| Fuel Capacity | 21.7 gal. | 22.2 gal. | -0.5 gal. |
| Headroom, Row 1 | 37.2 in | 38.0 in | -0.8 in |
| Shoulder Room, Row 1 | 59.1 in | 58.5 in | 0.6 in |
| Hip Room, Row 1 | 0.0 in | 55.4 in | -55.4 in |
| Legroom, Row 1 | 41.4 in | 43.7 in | -2.3 in |
| Headroom, Row 2 | 39.1 in | 38.0 in | 1.1 in |
| Shoulder Room, Row 2 | 57.8 in | 56.4 in | 1.4 in |
| Hip Room, Row 2 | 0.0 in | 55.5 in | -55.5 in |
| Legroom, Row 2 | 42.9 in | 36.7 in | 6.2 in |
| Total Legroom | 84.3 in (over 2 rows) | 80.4 in (over 2 rows) | 3.9 in |
| Cargo Volume | 14.2 ft3 | 18.0 ft3 | -3.8 ft3 |
None of our members have yet commented on the seat room and comfort of the 2015 Audi A8 / S8.
None of our members have yet commented on the seat room and comfort of the 2017 Lexus LS.