| Model Year | 2009 | 2019 | |
| Model | Audi A8 / S8 | Infiniti QX80 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan, ext. | 4dr SUV | |
| Difference | |||
| Wheelbase | 121.0 in | 121.1 in | -0.1 in |
| Length | 204.4 in | 208.9 in | -4.5 in |
| Width | 74.6 in | 79.9 in | -5.3 in |
| Height | 57.3 in | 75.8 in | -18.5 in |
| Curb Weight | 4399 lb. | 5644 lb. | -1245 lb. |
| Fuel Capacity | 23.8 gal. | 26.0 gal. | -2.2 gal. |
| Headroom, Row 1 | 37.4 in | 39.9 in | -2.5 in |
| Shoulder Room, Row 1 | 59.1 in | 63.8 in | -4.7 in |
| Hip Room, Row 1 | 0.0 in | 59.2 in | -59.2 in |
| Legroom, Row 1 | 41.3 in | 39.6 in | 1.7 in |
| Headroom, Row 2 | 38.3 in | 40.0 in | -1.7 in |
| Shoulder Room, Row 2 | 57.5 in | 63.5 in | -6 in |
| Hip Room, Row 2 | 0.0 in | 58.4 in | -58.4 in |
| Legroom, Row 2 | 42.3 in | 41.0 in | 1.3 in |
| Headroom, Row 3 | 0.0 in | 36.8 in | -36.8 in |
| Shoulder Room, Row 3 | 0.0 in | 60.5 in | -60.5 in |
| Hip Room, Row 3 | 0.0 in | 48.8 in | -48.8 in |
| Legroom, Row 3 | 0.0 in | 28.8 in | -28.8 in |
| Total Legroom | 83.6 in (over 2 rows) | 109.4 in (over 3 rows) | -25.8 in |
| Cargo Volume, Minimum | 14.6 ft3 | 16.6 ft3 | -2 ft3 |
| Cargo Volume, Behind R2 | 14.6 | 49.6 ft3 | -35 |
| Cargo Volume, Maximum | 14.6 ft3 | 95.1 ft3 | -80.5 ft3 |
None of our members have yet commented on the seat room and comfort of the 2009 Audi A8 / S8.
None of our members have yet commented on the seat room and comfort of the 2019 Infiniti QX80.