← all 1985 Buick Riviera Convertible trims
1985 Buick Riviera Convertible — 5.0L 8-cyl, Automatic 4-spd, FWD
This 1985 Buick Riviera Convertible (5.0L 8-cyl, Automatic 4-spd, FWD) takes regular (87-octane) gasoline. REGULAR
17
MPG combined (15 city / 20 hwy)
$3,650
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
Other 1985 Buick Riviera Convertible trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 5.0L 8-cyl, Automatic 4-spd, FWD | REGULAR | 17 | $3,650 |
| 3.8L 6-cyl, Automatic 4-spd, FWD | PREMIUM | 17 | $4,550 |
EPA fuel type: Regular · class: Compact Cars · retrieved 2026-06-14.