| Model Year | 2011 | 2007 | |
| Model | Chevrolet HHR | Cadillac STS | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Wagon | 4dr Sedan | |
| Difference | |||
| Wheelbase | 103.5 in | 116.4 in | -12.9 in |
| Length | 176.2 in | 196.3 in | -20.1 in |
| Width | 69.1 in | 72.6 in | -3.5 in |
| Height | 63.1 in | 57.6 in | 5.5 in |
| Curb Weight | 3155 lb. | 3960 lb. | -805 lb. |
| Fuel Capacity | 16.0 gal. | 17.0 gal. | -1 gal. |
| Headroom, Row 1 | 39.6 in | 38.7 in | 0.9 in |
| Shoulder Room, Row 1 | 53.5 in | 58.6 in | -5.1 in |
| Hip Room, Row 1 | 50.1 in | 54.6 in | -4.5 in |
| Legroom, Row 1 | 40.6 in | 42.6 in | -2 in |
| Headroom, Row 2 | 39.0 in | 37.9 in | 1.1 in |
| Shoulder Room, Row 2 | 52.7 in | 57.4 in | -4.7 in |
| Hip Room, Row 2 | 50.6 in | 55.6 in | -5 in |
| Legroom, Row 2 | 39.5 in | 38.3 in | 1.2 in |
| Total Legroom | 80.1 in (over 2 rows) | 80.9 in (over 2 rows) | -0.8 in |
| Cargo Volume, Minimum | 23.8 ft3 | 13.8 ft3 | 10 ft3 |
| Cargo Volume, Maximum | 57.7 ft3 | 13.8 ft3 | 43.9 ft3 |
None of our members have yet commented on the seat room and comfort of the 2011 Chevrolet HHR.
| 2007 Cadillac STS Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2006 | 4dr Sedan 254-horsepower 3.6L V6 5-speed shiftable automatic RWD |
No room in the back...even tight for kids. see full Cadillac STS review |
| 2006 | 4dr Sedan 320-horsepower 4.6L V8 5-speed shiftable automatic RWD |
Very tight legroom. see full Cadillac STS review |