| Model Year | 2018 | 2023 | |
| Model | Audi A8 / S8 | Audi RS Q8 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan, ext. | 4dr SUV | |
| Difference | |||
| Wheelbase | 122.9 in | 117.9 in | 5 in |
| Length | 207.4 in | 197.3 in | 10.1 in |
| Width | 76.7 in | 78.7 in | -2 in |
| Height | 57.9 in | 66.7 in | -8.8 in |
| Curb Weight | 4464 lb. | 5490 lb. | -1026 lb. |
| Fuel Capacity | 21.7 gal. | 22.5 gal. | -0.8 gal. |
| Headroom, Row 1 | 37.2 in | 41.1 in | -3.9 in |
| Shoulder Room, Row 1 | 59.1 in | 59.5 in | -0.4 in |
| Legroom, Row 1 | 41.4 in | 41.2 in | 0.2 in |
| Headroom, Row 2 | 39.1 in | 38.6 in | 0.5 in |
| Shoulder Room, Row 2 | 57.8 in | 58.5 in | -0.7 in |
| Legroom, Row 2 | 42.9 in | 40.1 in | 2.8 in |
| Total Legroom | 84.3 in (over 2 rows) | 81.3 in (over 2 rows) | 3 in |
| Cargo Volume, Minimum | 14.2 ft3 | 30.5 ft3 | -16.3 ft3 |
| Cargo Volume, Maximum | 14.2 ft3 | 60.7 ft3 | -46.5 ft3 |
None of our members have yet commented on the seat room and comfort of the 2018 Audi A8 / S8.
None of our members have yet commented on the seat room and comfort of the 2023 Audi RS Q8.