← all 1998 Buick Century trims
1998 Buick Century — 3.1L 6-cyl, Automatic 4-spd, FWD
This 1998 Buick Century (3.1L 6-cyl, Automatic 4-spd, FWD) takes regular (87-octane) gasoline. REGULAR
21
MPG combined (17 city / 27 hwy)
$2,950
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
EPA fuel type: Regular · class: Midsize Cars · retrieved 2026-06-14.