FuelFacts

← all 1984 Buick Century trims

1984 Buick Century — 4.3L 6-cyl, Automatic 4-spd

This 1984 Buick Century (4.3L 6-cyl, Automatic 4-spd) runs on diesel. DIESEL

24
MPG combined (21 city / 31 hwy)
$3,250
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂

Other 1984 Buick Century trims

TrimFuelMPGFuel/yr
2.5L 4-cyl, Automatic 3-spdREGULAR23$2,700
2.5L 4-cyl, Automatic 3-spdREGULAR23$2,700
3.0L 6-cyl, Automatic 3-spdREGULAR20$3,100
3.8L 6-cyl, Automatic 4-spdREGULAR19$3,300
3.8L 6-cyl, Automatic 4-spdREGULAR19$3,300
3.0L 6-cyl, Automatic 3-spdREGULAR18$3,450
4.3L 6-cyl, Automatic 3-spdDIESEL25$3,150
4.3L 6-cyl, Automatic 3-spdDIESEL24$3,250

EPA fuel type: Diesel · class: Midsize Cars · retrieved 2026-06-14.