| Model Year | 2008 | 2006 | |
| Model | Infiniti M | Audi A8 | |
| Engine | 4.5L V8 DOHC-4v 325 hp@6400 336 lb-ft@4000 |
6.0L W12 DOHC-4v 450 hp@6200 428 lb-ft@4000 |
|
| Transmission | 5-speed shiftable automatic | 6-speed shiftable automatic | |
| Drivetrain | AWD | 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 | 4159 lb. | 4618 lb. | -459 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 |
| 2008 Infiniti M Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2009 | 4dr Sedan 325-horsepower 4.5L V8 5-speed shiftable automatic AWD |
Huge rear seat with tons of space. Passengers routinly comment on how comfortable it is. Significantly more rear seat room then 5 series BMW. Ininiti G35/37 has more rear seat than the 5 series. see full Infiniti M review |
| 2008 | 4dr Sedan 275-horsepower 3.5L V6 5-speed shiftable automatic AWD |
The front seats are better padded than the 2006 and more comfortable see full Infiniti M review |
| 2008 | 4dr Sedan 275-horsepower 3.5L V6 5-speed shiftable automatic RWD |
I sit very tall, and have lots of headroom in this car see full Infiniti M review |
| 2008 | 4dr Sedan 275-horsepower 3.5L V6 5-speed shiftable automatic RWD |
lots of leg space. very comfortable seats see full Infiniti M review |
| 2008 | 4dr Sedan 275-horsepower 3.5L V6 5-speed shiftable automatic AWD |
Ample, yet feels built for speed see full Infiniti M review |
| 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 Audi A8 Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2005 | 4dr Sedan, ext. 330-horsepower 4.2L V8 6-speed shiftable automatic AWD |
TOTAL COMFORT. SEAT CAN BE ADJUSTED TO GIVE COMFORT FOR BACK AND LEGS. see full Audi A8 review |