| Model Year | 2008 | 2015 | |
| Model | Audi A8 / S8 | Ford Flex | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan, ext. | 4dr SUV | |
| Difference | |||
| Wheelbase | 121.0 in | 117.9 in | 3.1 in |
| Length | 204.4 in | 201.8 in | 2.6 in |
| Width | 74.6 in | 75.9 in | -1.3 in |
| Height | 57.3 in | 68.0 in | -10.7 in |
| Curb Weight | 4399 lb. | 4471 lb. | -72 lb. |
| Fuel Capacity | 23.8 gal. | 19.2 gal. | 4.6 gal. |
| Headroom, Row 1 | 37.4 in | 41.8 in | -4.4 in |
| Shoulder Room, Row 1 | 59.1 in | 58.4 in | 0.7 in |
| Hip Room, Row 1 | 0.0 in | 55.5 in | -55.5 in |
| Legroom, Row 1 | 41.3 in | 40.8 in | 0.5 in |
| Headroom, Row 2 | 38.3 in | 40.5 in | -2.2 in |
| Shoulder Room, Row 2 | 57.5 in | 58.1 in | -0.6 in |
| Hip Room, Row 2 | 0.0 in | 55.0 in | -55 in |
| Legroom, Row 2 | 42.3 in | 44.3 in | -2 in |
| Headroom, Row 3 | 0.0 in | 38.7 in | -38.7 in |
| Shoulder Room, Row 3 | 0.0 in | 50.8 in | -50.8 in |
| Hip Room, Row 3 | 0.0 in | 41.1 in | -41.1 in |
| Legroom, Row 3 | 0.0 in | 33.3 in | -33.3 in |
| Total Legroom | 83.6 in (over 2 rows) | 118.4 in (over 3 rows) | -34.8 in |
| Cargo Volume, Minimum | 14.6 ft3 | 20.0 ft3 | -5.4 ft3 |
| Cargo Volume, Behind R2 | 14.6 | 43.2 ft3 | -28.6 |
| Cargo Volume, Maximum | 14.6 ft3 | 83.2 ft3 | -68.6 ft3 |
None of our members have yet commented on the seat room and comfort of the 2008 Audi A8 / S8.
None of our members have yet commented on the seat room and comfort of the 2015 Ford Flex.