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1987 Buick Riviera — 3.8L 6-cyl, Automatic 4-spd, FWD
This 1987 Buick Riviera (3.8L 6-cyl, Automatic 4-spd, FWD) takes regular (87-octane) gasoline. REGULAR
19
MPG combined (16 city / 25 hwy)
$3,300
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
EPA fuel type: Regular · class: Midsize Cars · retrieved 2026-06-14.