| Model Year | 2017 | 2015 | |
| Model | Audi A8 / S8 | Infiniti QX50 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan, ext. | 4dr SUV | |
| Difference | |||
| Wheelbase | 122.9 in | 110.2 in | 12.7 in |
| Length | 207.4 in | 182.3 in | 25.1 in |
| Width | 76.7 in | 71.0 in | 5.7 in |
| Height | 57.9 in | 61.9 in | -4 in |
| Curb Weight | 4464 lb. | 3790 lb. | 674 lb. |
| Fuel Capacity | 21.7 gal. | 20.0 gal. | 1.7 gal. |
| Headroom, Row 1 | 37.2 in | 40.5 in | -3.3 in |
| Shoulder Room, Row 1 | 59.1 in | 54.8 in | 4.3 in |
| Hip Room, Row 1 | 0.0 in | 52.9 in | -52.9 in |
| Legroom, Row 1 | 41.4 in | 44.3 in | -2.9 in |
| Headroom, Row 2 | 39.1 in | 38.4 in | 0.7 in |
| Shoulder Room, Row 2 | 57.8 in | 55.1 in | 2.7 in |
| Hip Room, Row 2 | 0.0 in | 50.0 in | -50 in |
| Legroom, Row 2 | 42.9 in | 28.5 in | 14.4 in |
| Total Legroom | 84.3 in (over 2 rows) | 72.8 in (over 2 rows) | 11.5 in |
| Cargo Volume, Minimum | 14.2 ft3 | 18.6 ft3 | -4.4 ft3 |
| Cargo Volume, Maximum | 14.2 ft3 | 47.4 ft3 | -33.2 ft3 |
None of our members have yet commented on the seat room and comfort of the 2017 Audi A8 / S8.
| 2015 Infiniti QX50 Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2016 | 4dr SUV 325-horsepower 3.7L V6 7-speed shiftable automatic AWD |
The second row seat was mounted comfortably high off the floor. see full Infiniti QX50 review |