Does the 1984 Pontiac Firebird need premium gas?
Every trim takes regular — no premium needed.
| Trim (engine / transmission) | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 2.5L 4-cyl, 5-spd manual | REGULAR | 23 | $2,700 |
| 2.5L 4-cyl, 5-spd manual | REGULAR | 23 | $2,700 |
| 2.5L 4-cyl, Automatic 4-spd | REGULAR | 22 | $2,850 |
| 2.5L 4-cyl, Automatic 4-spd | REGULAR | 22 | $2,850 |
| 2.5L 4-cyl, 4-spd manual | REGULAR | 21 | $2,950 |
| 2.5L 4-cyl, 4-spd manual | REGULAR | 21 | $2,950 |
| 2.8L 6-cyl, Automatic 4-spd | REGULAR | 19 | $3,300 |
| 2.8L 6-cyl, Automatic 4-spd | REGULAR | 19 | $3,300 |
| 2.8L 6-cyl, 5-spd manual | REGULAR | 18 | $3,450 |
| 2.8L 6-cyl, 5-spd manual | REGULAR | 18 | $3,450 |
| 5.0L 8-cyl, Automatic 4-spd | REGULAR | 17 | $3,650 |
| 5.0L 8-cyl, Automatic 4-spd | REGULAR | 17 | $3,650 |
| 5.0L 8-cyl, 5-spd manual | REGULAR | 15 | $4,150 |
| 5.0L 8-cyl, 5-spd manual | REGULAR | 15 | $4,150 |
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.
14 trim(s) · EPA FuelEconomy.gov · retrieved 2026-06-14.