Fuel tank: 8 of 8 variants rated.
Cadillac STS-V 4.4 V8 Supercharged tops the Cadillac STS ranking by Fuel tank, at 66 L (17.4 gal US).
Across 8 ranked variants, Fuel tank spans from 66 L (17.4 gal US) to 66 L (17.4 gal US).
| # | Variant | Year | Body | Fuel | Fuel tank |
|---|---|---|---|---|---|
| 1 | Cadillac STS-V 4.4 V8 Supercharged | 2007 | Sedan | Petrol | 66 L (17.4 gal US) |
| 2 | Cadillac STS 4.6 V8 AWD Sport Luxury | 2006 | Sedan | Petrol | 66 L (17.4 gal US) |
| 3 | Cadillac STS 3.6 V6 Elegance | 2005 | Sedan | Petrol | 66 L (17.4 gal US) |
| 4 | Cadillac STS 3.6 V6 Launch Edition | 2005 | Sedan | Petrol | 66 L (17.4 gal US) |
| 5 | Cadillac STS 3.6 V6 Sport Luxury | 2005 | Sedan | Petrol | 66 L (17.4 gal US) |
| 6 | Cadillac STS 4.6 V8 Elegance | 2005 | Sedan | Petrol | 66 L (17.4 gal US) |
| 7 | Cadillac STS 4.6 V8 Launch Edition | 2005 | Sedan | Petrol | 66 L (17.4 gal US) |
| 8 | Cadillac STS 4.6 V8 Sport Luxury | 2005 | Sedan | Petrol | 66 L (17.4 gal US) |