← all 1984 Buick Riviera trims
1984 Buick Riviera — 5.7L 8-cyl, Automatic 4-spd
This 1984 Buick Riviera (5.7L 8-cyl, Automatic 4-spd) runs on diesel. DIESEL
21
MPG combined (18 city / 26 hwy)
$3,700
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
Other 1984 Buick Riviera 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 |
| 3.8L 6-cyl, Automatic 4-spd | REGULAR | 15 | $4,150 |
| 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: Diesel · class: Midsize Cars · retrieved 2026-06-14.