| Model Year | 2007 | 2009 | |
| Model | Chevrolet HHR | Dodge Challenger | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Wagon | 2dr Coupe | |
| Difference | |||
| Wheelbase | 103.5 in | 116.0 in | -12.5 in |
| Length | 176.2 in | 197.7 in | -21.5 in |
| Width | 69.2 in | 75.7 in | -6.5 in |
| Height | 65.2 in | 57.0 in | 8.2 in |
| Curb Weight | 3155 lb. | 3719 lb. | -564 lb. |
| Fuel Capacity | 16.2 gal. | 19.0 gal. | -2.8 gal. |
| Headroom, Row 1 | 39.5 in | 39.5 in | 0 in |
| Shoulder Room, Row 1 | 53.5 in | 58.2 in | -4.7 in |
| Hip Room, Row 1 | 50.1 in | 54.7 in | -4.6 in |
| Legroom, Row 1 | 40.6 in | 42.0 in | -1.4 in |
| Headroom, Row 2 | 39.6 in | 37.4 in | 2.2 in |
| Shoulder Room, Row 2 | 52.7 in | 53.9 in | -1.2 in |
| Hip Room, Row 2 | 50.6 in | 51.4 in | -0.8 in |
| Legroom, Row 2 | 39.5 in | 32.6 in | 6.9 in |
| Total Legroom | 80.1 in (over 2 rows) | 74.6 in (over 2 rows) | 5.5 in |
| Cargo Volume, Minimum | 24.0 ft3 | 16.2 ft3 | 7.8 ft3 |
| Cargo Volume, Maximum | 63.1 ft3 | 16.2 ft3 | 46.9 ft3 |
| 2007 Chevrolet HHR Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2008 | 4dr Wagon 172-horsepower 2.4L I4 4-speed automatic FWD |
Larger than normal 4-door car see full Chevrolet HHR review |
| 2008 | 4dr Wagon 149-horsepower 2.2L I4 5-speed manual FWD |
2 kids in the back and they have plenty of room see full Chevrolet HHR review |
| 2008 | 4dr Wagon 149-horsepower 2.2L I4 4-speed automatic FWD |
It is adjustable and relaxing. see full Chevrolet HHR review |
| 2008 | 4dr Wagon 172-horsepower 2.4L I4 4-speed automatic FWD |
Roomy enough for 2 adults in the rear seats with plenty of room left behind seat for luggage or gear. see full Chevrolet HHR review |
| 2007 | 4dr Wagon 149-horsepower 2.2L I4 4-speed automatic FWD |
The rear seat room is relatively large. On long road trips when i am not driving, my back starts to hurt and i cant find a comfortable position to sit in. see full Chevrolet HHR review |
| 2007 | 4dr Wagon 175-horsepower 2.4L I4 4-speed automatic FWD |
Great seating position. Long drives are not a problem see full Chevrolet HHR review |
| 2007 | 4dr Wagon 175-horsepower 2.4L I4 4-speed automatic FWD |
Fits 4 people very nicely for long trips. Upright seating works well. see full Chevrolet HHR review |
| 2007 | 4dr Wagon 175-horsepower 2.4L I4 4-speed automatic FWD |
Extremly comfortable. You have to sit in it to understand. The leather seat is more comfortable than the cloth seat. see full Chevrolet HHR review |
| 2007 | 4dr Wagon 175-horsepower 2.4L I4 4-speed automatic FWD |
See above. Add to that heated leather seats. Oh yeah!!! Remote start is great also. see full Chevrolet HHR review |
| 2006 | 4dr Wagon 172-horsepower 2.4L I4 5-speed manual FWD |
Better than any of the 4 Volvos I driven see full Chevrolet HHR review |
| 2007 Chevrolet HHR Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2008 | 4dr Wagon 172-horsepower 2.4L I4 4-speed automatic FWD |
Could be a bit deeper and more supportive see full Chevrolet HHR review |
| 2007 | 4dr Wagon 149-horsepower 2.2L I4 4-speed automatic FWD |
Not much room for tall people in the back. see full Chevrolet HHR review |
| 2007 | 4dr Wagon 175-horsepower 2.4L I4 4-speed automatic FWD |
Rear seat is cramped. see full Chevrolet HHR review |
| 2006 | 4dr Wagon 172-horsepower 2.4L I4 4-speed automatic FWD |
Not a lot of leg room. Cloth is kind of cheap and not very attractive see full Chevrolet HHR review |
| 2009 Dodge Challenger Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2010 | 2dr Coupe 376-horsepower 5.7L V8 6-speed manual RWD |
Challenger has tilt/telescope steering wheel that can be positioned exactly where you want see full Dodge Challenger review |
| 2010 | 2dr Coupe 376-horsepower 5.7L V8 6-speed manual RWD |
I can set the front seat in a comfortable location for myself and still have room behind me for a rear seat passenger. Seat can be positioned for a more chair-like seating position. see full Dodge Challenger review |
| 2010 | 2dr Coupe 376-horsepower 5.7L V8 6-speed manual RWD |
Larger/wider back seat with capability of handling modern child seats. Adequate space for occasional adult use of back seat. see full Dodge Challenger review |
| 2010 | 2dr Coupe 376-horsepower 5.7L V8 6-speed manual RWD |
With the tilt/telescope steering wheel and the larger interior room vs. its competitors this car is easily adjusted to fit the driver and I get out still feeling good after all-day drives. see full Dodge Challenger review |
| 2009 | 2dr Coupe 376-horsepower 5.7L V8 6-speed manual RWD |
The most comfortable seats I have ever been in can drive all day and back does not hurt. see full Dodge Challenger review |