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1986 Oldsmobile Firenza — 1.8L 4-cyl, Automatic 3-spd, FWD
This 1986 Oldsmobile Firenza (1.8L 4-cyl, Automatic 3-spd, FWD) takes premium gasoline. PREMIUM
20
MPG combined (18 city / 24 hwy)
$3,850
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
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 1986 Oldsmobile Firenza trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 1.8L 4-cyl, 5-spd manual, FWD | REGULAR | 27 | $2,300 |
| 2.0L 4-cyl, 4-spd manual, FWD | REGULAR | 25 | $2,500 |
| 1.8L 4-cyl, Automatic 3-spd, FWD | REGULAR | 24 | $2,600 |
| 2.0L 4-cyl, Automatic 3-spd, FWD | REGULAR | 22 | $2,850 |
| 2.8L 6-cyl, Automatic 3-spd, FWD | REGULAR | 19 | $3,300 |
| 2.8L 6-cyl, 4-spd manual, FWD | REGULAR | 19 | $3,300 |
| 1.8L 4-cyl, 4-spd manual, FWD | PREMIUM | 21 | $3,650 |
EPA fuel type: Premium · class: Compact Cars · retrieved 2026-06-14.