Does the 2008 Cadillac STS-V need premium gas?
Every gas trim of this model takes premium.
| Trim (engine / transmission) | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 4.4L 8-cyl, S6 automatic, RWD | PREMIUM | 15 | $5,150 |
The EPA records the fuel each version was tested on. Whether premium is strictly required or just recommended is an owner's-manual detail the EPA dataset doesn't include — so we don't guess it.
1 trim(s) · EPA FuelEconomy.gov · retrieved 2026-06-14.