← all 2008 Pontiac Grand Prix trims
2008 Pontiac Grand Prix — 3.8L 6-cyl, Automatic 4-spd, FWD
This 2008 Pontiac Grand Prix (3.8L 6-cyl, Automatic 4-spd, FWD) takes regular (87-octane) gasoline. REGULAR
21
MPG combined (18 city / 28 hwy)
$2,714
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 Grand Prix trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 5.3L 8-cyl, S4 automatic, FWD | PREMIUM | 19 | $3,695 |
EPA fuel type: Regular · class: Midsize Cars · engine: 3.8L 6-cyl · transmission: Automatic 4-spd · drive: FWD · MPG retrieved 2026-07-24.