2018 BMW M3 CS — 3.0L 6-cyl, AM-S7 automatic, RWD
This 2018 BMW M3 CS (3.0L 6-cyl, AM-S7 automatic, RWD) takes premium gasoline. PREMIUM
19
MPG combined (16 city / 22 hwy)
$4,050
est. fuel cost / year (EPA, 15k mi)
481 g/mi
tailpipe CO₂
The EPA lists this trim as premium because that's the fuel the manufacturer specified for its mileage test. Many such engines will run on regular with slightly lower power and MPG — but check your owner's manual to see whether premium is required or just recommended.
EPA fuel type: Premium · class: Compact Cars · retrieved 2026-06-14.