Does the 2009 Pontiac G8 need premium gas?
Every trim takes regular — no premium needed.
| Trim (engine / transmission) | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 3.6L 6-cyl, S5 automatic, RWD | REGULAR | 20 | $3,100 |
| 6.0L 8-cyl, S6 automatic, RWD | REGULAR | 18 | $3,450 |
| 6.2L 8-cyl, S6 automatic, RWD | REGULAR | 15 | $4,150 |
| 6.2L 8-cyl, 6-spd manual, RWD | REGULAR | 15 | $4,150 |
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.
4 trim(s) · EPA FuelEconomy.gov · retrieved 2026-06-14.