← all 1991 Porsche 928 S4 trims
1991 Porsche 928 S4 — 4.9L 8-cyl, Automatic 4-spd, RWD
This 1991 Porsche 928 S4 (4.9L 8-cyl, Automatic 4-spd, RWD) takes regular (87-octane) gasoline. REGULAR
15
MPG combined (14 city / 18 hwy)
$4,150
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
Other 1991 Porsche 928 S4 trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 5.0L 8-cyl, Automatic 4-spd, RWD | PREMIUM | 15 | $5,150 |
| 5.0L 8-cyl, 5-spd manual, RWD | PREMIUM | 14 | $5,500 |
EPA fuel type: Regular · class: Midsize Cars · retrieved 2026-06-14.