← all 1984 Buick Century trims
1984 Buick Century — 3.0L 6-cyl, Automatic 3-spd
This 1984 Buick Century (3.0L 6-cyl, Automatic 3-spd) takes regular (87-octane) gasoline. REGULAR
18
MPG combined (16 city / 22 hwy)
$3,450
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
Other 1984 Buick Century trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 2.5L 4-cyl, Automatic 3-spd | REGULAR | 23 | $2,700 |
| 2.5L 4-cyl, Automatic 3-spd | REGULAR | 23 | $2,700 |
| 3.0L 6-cyl, Automatic 3-spd | REGULAR | 20 | $3,100 |
| 3.8L 6-cyl, Automatic 4-spd | REGULAR | 19 | $3,300 |
| 3.8L 6-cyl, Automatic 4-spd | REGULAR | 19 | $3,300 |
| 4.3L 6-cyl, Automatic 3-spd | DIESEL | 25 | $3,150 |
| 4.3L 6-cyl, Automatic 3-spd | DIESEL | 24 | $3,250 |
| 4.3L 6-cyl, Automatic 4-spd | DIESEL | 24 | $3,250 |
EPA fuel type: Regular · class: Midsize Cars · retrieved 2026-06-14.