Does the 2009 Pontiac G8 take premium or regular gas?

The EPA lists the 2009 Pontiac G8 3.6L 6-cyl, S5 automatic, RWD as taking regular. Combined MPG is 20, and at today's gas prices that's about $2,850 a year in fuel.

← all 2009 Pontiac G8 trims

2009 Pontiac G8 — 3.6L 6-cyl, S5 automatic, RWD

This 2009 Pontiac G8 (3.6L 6-cyl, S5 automatic, RWD) takes regular (87-octane) gasoline. REGULAR

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 2009 Pontiac G8 trims

Trim	Fuel	MPG	Fuel/yr
6.0L 8-cyl, S6 automatic, RWD	REGULAR	18	$3,167
6.2L 8-cyl, S6 automatic, RWD	REGULAR	15	$3,800
6.2L 8-cyl, 6-spd manual, RWD	REGULAR	15	$3,800

EPA fuel type: Regular · class: Large Cars · engine: 3.6L 6-cyl · transmission: S5 automatic · drive: RWD · MPG retrieved 2026-07-24.