| Model Year | 2008 | 2010 | |
| Model | Chevrolet HHR | Ford Mustang | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Wagon | 2dr Convertible | |
| Difference | |||
| Wheelbase | 103.5 in | 107.1 in | -3.6 in |
| Length | 176.2 in | 188.1 in | -11.9 in |
| Width | 69.2 in | 73.9 in | -4.7 in |
| Height | 65.2 in | 56.1 in | 9.1 in |
| Curb Weight | 3155 lb. | 3533 lb. | -378 lb. |
| Fuel Capacity | 16.2 gal. | 16.0 gal. | 0.2 gal. |
| Headroom, Row 1 | 39.5 in | 38.8 in | 0.7 in |
| Shoulder Room, Row 1 | 53.5 in | 55.3 in | -1.8 in |
| Hip Room, Row 1 | 50.1 in | 53.4 in | -3.3 in |
| Legroom, Row 1 | 40.6 in | 42.4 in | -1.8 in |
| Headroom, Row 2 | 39.6 in | 36.5 in | 3.1 in |
| Shoulder Room, Row 2 | 52.7 in | 45.0 in | 7.7 in |
| Hip Room, Row 2 | 50.6 in | 45.2 in | 5.4 in |
| Legroom, Row 2 | 39.5 in | 29.8 in | 9.7 in |
| Total Legroom | 80.1 in (over 2 rows) | 72.2 in (over 2 rows) | 7.9 in |
| Cargo Volume, Minimum | 24.0 ft3 | 9.6 ft3 | 14.4 ft3 |
| Cargo Volume, Maximum | 63.1 ft3 | 9.6 ft3 | 53.5 ft3 |
| 2008 Chevrolet HHR Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2009 | 4dr Wagon 155-horsepower 2.2L I4 4-speed automatic FWD |
It is roomy and comfortable. see full Chevrolet HHR review |
| 2009 | 4dr Wagon 155-horsepower 2.2L I4 4-speed automatic FWD |
The HHR has one of the most comfortable seats for me of most of the cars that I have driven. 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 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 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 |
| 2008 Chevrolet HHR Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2009 | 4dr Wagon 172-horsepower 2.4L I4 5-speed manual FWD |
little leg room see full Chevrolet HHR review |
| 2009 | 4dr Wagon 172-horsepower 2.4L I4 4-speed automatic FWD |
seat-back very annoying and driving position difficult to get right see full Chevrolet HHR review |
| 2009 | 4dr Wagon 172-horsepower 2.4L I4 4-speed automatic FWD |
low roof limits passenger packaging space - poor knee room see full Chevrolet HHR review |
| 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 |
| 2010 Ford Mustang Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2010 | 2dr Coupe 210-horsepower 4.0L V6 5-speed manual RWD |
Very confortable seats, The stock seats hold you pretty well even in a little senmi-agressing driving. Nice position in the power seats and easy to get the just right spot. see full Ford Mustang review |
| 2010 | 2dr Convertible 315-horsepower 4.6L V8 5-speed automatic RWD |
The adjustability of the power seat. see full Ford Mustang review |
| 2009 | 2dr Coupe 300-horsepower 4.6L V8 5-speed manual RWD |
Perfect seating position for both of us. Nice cush for your tush see full Ford Mustang review |
| 2010 Ford Mustang Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2011 | 2dr Coupe 305-horsepower 3.7L V6 6-speed manual RWD |
Felt like seating position was "on the floor". Steering wheel had only tilt adjustment, no telescope. see full Ford Mustang review |
| 2010 | 2dr Coupe 210-horsepower 4.0L V6 5-speed automatic RWD |
What rear seat room? see full Ford Mustang review |