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)
$2,850
est. fuel cost / year (today’s prices, 15k mi)
—
tailpipe CO₂
At today's AAA national average price ($3.80/gal, 2026-07-05) — the EPA's own price/date assumption isn't exposed in the public dataset, so we recompute this from the EPA's MPG figure and a sourced current price.
Other 2008 Pontiac G8 trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 6.0L 8-cyl, S6 automatic, RWD | PREMIUM | 18 | $3,900 |
EPA fuel type: Regular · class: Large Cars · engine: 3.6L 6-cyl · transmission: S5 automatic · drive: RWD · MPG retrieved 2026-07-24.