Does the 1985 Oldsmobile Cutlass Ciera need premium gas?
Fuel grade varies by trim — see the breakdown below.
| Trim (engine / transmission) | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 2.5L 4-cyl, Automatic 3-spd, FWD | REGULAR | 24 | $2,600 |
| 3.0L 6-cyl, Automatic 3-spd, FWD | REGULAR | 19 | $3,300 |
| 3.0L 6-cyl, Automatic 3-spd, FWD | REGULAR | 19 | $3,300 |
| 3.0L 6-cyl, Automatic 4-spd, FWD | REGULAR | 19 | $3,300 |
| 3.8L 6-cyl, Automatic 4-spd, FWD | REGULAR | 19 | $3,300 |
| 3.0L 6-cyl, Automatic 4-spd, FWD | REGULAR | 18 | $3,450 |
| 4.3L 6-cyl, Automatic 3-spd, FWD | DIESEL | 26 | $3,000 |
The EPA records the fuel each version was tested on. Whether premium is strictly required or just recommended is an owner's-manual detail the EPA dataset doesn't include — so we don't guess it.
7 trim(s) · EPA FuelEconomy.gov · retrieved 2026-06-14.