| Model Year | 2006 | 2010 | |
| Model | Infiniti M | Audi A8 | |
| Engine | 4.5L V8 DOHC-4v 335 hp@6400 340 lb-ft@4000 |
4.2L V8 DOHC-5v 350 hp@6600 325 lb-ft@3500 |
|
| Transmission | 5-speed shiftable automatic | 6-speed shiftable automatic | |
| Drivetrain | RWD | AWD | |
| Body | 4dr Sedan | 4dr Sedan | |
| Difference | |||
| Wheelbase | 114.2 in | 115.9 in | -1.7 in |
| Length | 192.6 in | 199.3 in | -6.7 in |
| Width | 70.8 in | 74.6 in | -3.8 in |
| Height | 59.4 in | 56.9 in | 2.5 in |
| Curb Weight | 4005 lb. | 4288 lb. | -283 lb. |
| Fuel Capacity | 20.0 gal. | 23.8 gal. | -3.8 gal. |
| Headroom, Row 1 | 39.6 in | 37.3 in | 2.3 in |
| Shoulder Room, Row 1 | 58.2 in | 59.1 in | -0.9 in |
| Hip Room, Row 1 | 55.1 in | 0.0 in | 55.1 in |
| Legroom, Row 1 | 44.2 in | 41.4 in | 2.8 in |
| Headroom, Row 2 | 37.8 in | 38.0 in | -0.2 in |
| Shoulder Room, Row 2 | 56.9 in | 57.5 in | -0.6 in |
| Hip Room, Row 2 | 53.9 in | 0.0 in | 53.9 in |
| Legroom, Row 2 | 37.3 in | 37.6 in | -0.3 in |
| Total Legroom | 81.5 in (over 2 rows) | 79 in (over 2 rows) | 2.5 in |
| Cargo Volume | 14.9 ft3 | 14.6 ft3 | 0.3 ft3 |
| 2006 Infiniti M Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2007 | 4dr Sedan 325-horsepower 4.5L V8 5-speed shiftable automatic RWD |
Very comfy, yet generally supportive. Highly adjustable with two memory options. Cooled and heated seats are wonderful. see full Infiniti M review |
| 2006 | 4dr Sedan 335-horsepower 4.5L V8 5-speed shiftable automatic RWD |
Most front leg room compared to similar vehicles at the time. Even rear leg room fair. First car I owned with rear view camera still working well with great color and resolution. see full Infiniti M review |
| 2006 Infiniti M Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2006 | 4dr Sedan 335-horsepower 4.5L V8 5-speed shiftable automatic RWD |
Plenty see full Infiniti M review |
| 2006 | 4dr Sedan 335-horsepower 4.5L V8 5-speed shiftable automatic RWD |
Great--the Sport model has really good side bolstering and adjustable lumbar support + heated AND cooled seats. see full Infiniti M review |
None of our members have yet commented on the seat room and comfort of the 2010 Audi A8.