| Model Year | 2007 | 2009 | |
| Model | Porsche Cayman | Chevrolet Impala | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 2dr Hatch | 4dr Sedan | |
| Difference | |||
| Wheelbase | 95.1 in | 110.5 in | -15.4 in |
| Length | 170.9 in | 200.4 in | -29.5 in |
| Width | 70.9 in | 72.9 in | -2 in |
| Height | 51.4 in | 58.7 in | -7.3 in |
| Curb Weight | 2965 lb. | 3555 lb. | -590 lb. |
| Fuel Capacity | 17.0 gal. | 17.0 gal. | 0 gal. |
| Headroom, Row 1 | 0.0 in | 39.4 in | -39.4 in |
| Shoulder Room, Row 1 | 0.0 in | 58.7 in | -58.7 in |
| Hip Room, Row 1 | 0.0 in | 56.4 in | -56.4 in |
| Legroom, Row 1 | 0.0 in | 42.3 in | -42.3 in |
| Headroom, Row 2 | 0.0 in | 37.8 in | -37.8 in |
| Shoulder Room, Row 2 | 0.0 in | 58.6 in | -58.6 in |
| Hip Room, Row 2 | 0.0 in | 57.2 in | -57.2 in |
| Legroom, Row 2 | 0.0 in | 37.6 in | -37.6 in |
| Total Legroom | 0 in (over 1 rows) | 79.9 in (over 2 rows) | -79.9 in |
| Cargo Volume | 14.5 ft3 | 18.6 ft3 | -4.1 ft3 |
| 2007 Porsche Cayman Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2006 | 2dr Hatch 295-horsepower 3.4L H6 6-speed manual RWD |
:) There is none. see full Porsche Cayman review |
| 2009 Chevrolet Impala Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2008 | 4dr Sedan 211-horsepower 3.5L V6 4-speed automatic FWD |
Perhaps the largest rear seat in a sedan. Can squeeze three normal adults. see full Chevrolet Impala review |
| 2008 | 4dr Sedan 211-horsepower 3.5L V6 4-speed automatic FWD |
Large seat for my large seat, very good lumbar support, good power adjustments. see full Chevrolet Impala review |
| 2008 | 4dr Sedan 233-horsepower 3.9L V6 4-speed automatic FWD |
Good support for legs and back. Seat adjusts to fit most people. see full Chevrolet Impala review |
| 2008 | 4dr Sedan 211-horsepower 3.5L V6 4-speed automatic FWD |
Wide open... see full Chevrolet Impala review |
| 2008 | 4dr Sedan 233-horsepower 3.9L V6 4-speed automatic FWD |
Very easy to get in and out of this car. Front seat is roomy and fairly comfortable. see full Chevrolet Impala review |
| 2009 Chevrolet Impala Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2008 | 4dr Sedan 211-horsepower 3.5L V6 4-speed automatic FWD |
Large trunk space seems to sacrifise rear seat area. see full Chevrolet Impala review |
| 2008 | 4dr Sedan 211-horsepower 3.5L V6 4-speed automatic FWD |
Not enough leg room. see full Chevrolet Impala review |
| 2008 | 4dr Sedan 233-horsepower 3.9L V6 4-speed automatic FWD |
When the drivers seat is all the way back there is little rear seat legroom for tall folks. see full Chevrolet Impala review |