FuelFacts

← all 1985 Pontiac Sunbird Convertible trims

1985 Pontiac Sunbird Convertible — 1.8L 4-cyl, 4-spd manual, FWD

This 1985 Pontiac Sunbird Convertible (1.8L 4-cyl, 4-spd manual, FWD) takes premium gasoline. PREMIUM

22
MPG combined (19 city / 27 hwy)
$3,191
est. fuel cost / year (today’s prices, 15k mi)
—
tailpipe CO₂

At today's AAA national average price ($4.68/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.

This 1985 model was originally EPA-tested under the pre-2008 2-cycle method, which didn't account for highway speeds over 60 mph, air-conditioner use, or cold starts. When EPA overhauled the test for model year 2008, city ratings fell by about 12% and highway by about 8% on average industry-wide — and EPA retroactively adjusted every 1984-2007 rating to the stricter standard so old and new cars could be compared fairly. The MPG above is already on that modern scale — the window sticker on this car when it was new likely showed a higher, pre-2008-method number.

The EPA lists this trim as premium because that's the fuel the manufacturer specified for its mileage test. Many such engines will run on regular with slightly lower power and MPG — but check your owner's manual to see whether premium is required or just recommended.

Other 1985 Pontiac Sunbird Convertible trims

TrimFuelMPGFuel/yr
1.8L 4-cyl, 5-spd manual, FWDREGULAR26$2,192
1.8L 4-cyl, Automatic 3-spd, FWDREGULAR23$2,478
1.8L 4-cyl, 4-spd manual, FWDPREMIUM21$3,343
1.8L 4-cyl, Automatic 3-spd, FWDPREMIUM20$3,510
1.8L 4-cyl, Automatic 3-spd, FWDPREMIUM19$3,695

EPA fuel type: Premium · class: Subcompact Cars · engine: 1.8L 4-cyl turbo · transmission: 4-spd manual · drive: FWD · MPG retrieved 2026-07-24.