FuelFacts

← all 2018 Subaru Legacy AWD trims

2018 Subaru Legacy AWD — 2.5L 4-cyl, AV-S7 automatic, AWD

This 2018 Subaru Legacy AWD (2.5L 4-cyl, AV-S7 automatic, AWD) takes regular (87-octane) gasoline. REGULAR

29
MPG combined (25 city / 34 hwy)
$1,966
est. fuel cost / year (today’s prices, 15k mi)
311 g/mi
tailpipe CO₂

At today's AAA national average price ($3.80/gal, 2026-07-05) — the EPA's own price/date assumption isn't exposed in the public dataset, so we recompute this from the EPA's MPG figure and a sourced current price.

Other 2018 Subaru Legacy AWD trims

TrimFuelMPGFuel/yr
3.6L 6-cyl, AV-S6 automatic, AWDREGULAR23$2,478

EPA fuel type: Regular · class: Midsize Cars · engine: 2.5L 4-cyl · transmission: AV-S7 automatic · drive: AWD · MPG retrieved 2026-07-24.