2018 Kia Optima S — 2.4L 4-cyl, S6 automatic, FWD
This 2018 Kia Optima S (2.4L 4-cyl, S6 automatic, FWD) takes regular (87-octane) gasoline. REGULAR
26
MPG combined (23 city / 32 hwy)
$2,400
est. fuel cost / year (EPA, 15k mi)
340 g/mi
tailpipe CO₂
EPA fuel type: Regular · class: Large Cars · retrieved 2026-06-14.