| Model Year | 2009 | 2012 | |
| Model | Audi A6 / S6 | Lexus HS | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan | 4dr Sedan | |
| Difference | |||
| Wheelbase | 111.9 in | 106.3 in | 5.6 in |
| Length | 193.5 in | 184.8 in | 8.7 in |
| Width | 73.0 in | 70.3 in | 2.7 in |
| Height | 57.5 in | 59.3 in | -1.8 in |
| Curb Weight | 4123 lb. | 3682 lb. | 441 lb. |
| Fuel Capacity | 21.1 gal. | 14.5 gal. | 6.6 gal. |
| Headroom, Row 1 | 38.7 in | 38.0 in | 0.7 in |
| Shoulder Room, Row 1 | 57.1 in | 53.8 in | 3.3 in |
| Hip Room, Row 1 | 0.0 in | 52.8 in | -52.8 in |
| Legroom, Row 1 | 41.3 in | 42.6 in | -1.3 in |
| Headroom, Row 2 | 37.8 in | 36.8 in | 1 in |
| Shoulder Room, Row 2 | 55.9 in | 54.2 in | 1.7 in |
| Hip Room, Row 2 | 0.0 in | 51.2 in | -51.2 in |
| Legroom, Row 2 | 36.9 in | 34.5 in | 2.4 in |
| Total Legroom | 78.2 in (over 2 rows) | 77.1 in (over 2 rows) | 1.1 in |
| Cargo Volume | 15.9 ft3 | 12.1 ft3 | 3.8 ft3 |
None of our members have yet commented on the seat room and comfort of the 2009 Audi A6 / S6.
None of our members have yet commented on the seat room and comfort of the 2012 Lexus HS.