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| 2009 Cadillac STS | 2008 Cadillac STS | |
| Price Range | $45,950 - $80,900 | $37,615 - $78,215 |
| Engine(s) | 3.6l V6, 4.4l V8 S, 4.6l V8 | 3.6l V6, 4.4l V8, 4.6l V8 |
| Transmission(s) | A6 | A6 |
| Driven Wheels | AWD, RWD | AWD, RWD |
| Length / Width / Height | 196.3 / 72.6 / 57.6 | 196.3 / 72.6 / 57.6 |
| Curb Weight (lbs.) | 3660 - 4294 | 3660 - 4294 |