2008 Pontiac G8 — 3.6L 6-cyl, S5 automatic, RWD
This 2008 Pontiac G8 (3.6L 6-cyl, S5 automatic, RWD) takes regular (87-octane) gasoline. REGULAR
20
MPG combined (17 city / 25 hwy)
$3,100
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
Other 2008 Pontiac G8 trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 6.0L 8-cyl, S6 automatic, RWD | PREMIUM | 18 | $4,300 |
EPA fuel type: Regular · class: Large Cars · retrieved 2026-06-14.