| Model Year | 2023 | 2009 | |
| Model | Audi A8 / S8 | Infiniti QX | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan, ext. | 4dr SUV | |
| Difference | |||
| Wheelbase | 123.1 in | 123.2 in | -0.1 in |
| Length | 209.5 in | 206.9 in | 2.6 in |
| Width | 76.6 in | 78.8 in | -2.2 in |
| Height | 58.3 in | 77.0 in | -18.7 in |
| Curb Weight | 4762 lb. | 5597 lb. | -835 lb. |
| Fuel Capacity | 21.7 gal. | 28.0 gal. | -6.3 gal. |
| Headroom, Row 1 | 38.3 in | 41.0 in | -2.7 in |
| Shoulder Room, Row 1 | 59.1 in | 65.1 in | -6 in |
| Hip Room, Row 1 | 0.0 in | 61.3 in | -61.3 in |
| Legroom, Row 1 | 41.5 in | 41.8 in | -0.3 in |
| Headroom, Row 2 | 38.5 in | 40.0 in | -1.5 in |
| Shoulder Room, Row 2 | 57.6 in | 64.5 in | -6.9 in |
| Hip Room, Row 2 | 0.0 in | 60.1 in | -60.1 in |
| Legroom, Row 2 | 44.3 in | 41.9 in | 2.4 in |
| Headroom, Row 3 | 0.0 in | 35.9 in | -35.9 in |
| Shoulder Room, Row 3 | 0.0 in | 63.7 in | -63.7 in |
| Hip Room, Row 3 | 0.0 in | 48.8 in | -48.8 in |
| Legroom, Row 3 | 0.0 in | 32.2 in | -32.2 in |
| Total Legroom | 85.8 in (over 2 rows) | 115.9 in (over 3 rows) | -30.1 in |
| Cargo Volume, Minimum | 12.5 ft3 | 20.0 ft3 | -7.5 ft3 |
| Cargo Volume, Behind R2 | 12.5 | 61.2 ft3 | -48.7 |
| Cargo Volume, Maximum | 12.5 ft3 | 97.1 ft3 | -84.6 ft3 |
None of our members have yet commented on the seat room and comfort of the 2023 Audi A8 / S8.
None of our members have yet commented on the seat room and comfort of the 2009 Infiniti QX.