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1984 Buick Riviera Convertible — 3.8L 6-cyl, Automatic 4-spd
This 1984 Buick Riviera Convertible (3.8L 6-cyl, Automatic 4-spd) takes regular (87-octane) gasoline. REGULAR
15
MPG combined (13 city / 20 hwy)
$4,150
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
Other 1984 Buick Riviera Convertible trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 5.0L 8-cyl, Automatic 4-spd | REGULAR | 16 | $3,900 |
| 5.0L 8-cyl, Automatic 4-spd | REGULAR | 16 | $3,900 |
| 4.1L 6-cyl, Automatic 4-spd | REGULAR | 15 | $4,150 |
| 4.1L 6-cyl, Automatic 4-spd | REGULAR | 15 | $4,150 |
EPA fuel type: Regular · class: Compact Cars · retrieved 2026-06-14.