FuelFacts

← all 2006 Subaru Legacy AWD trims

2006 Subaru Legacy AWD — 2.5L 4-cyl, S5 automatic, AWD

This 2006 Subaru Legacy AWD (2.5L 4-cyl, S5 automatic, AWD) takes premium gasoline. PREMIUM

19
MPG combined (17 city / 23 hwy)
$3,695
est. fuel cost / year (today’s prices, 15k mi)
tailpipe CO₂

At today's AAA national average price ($4.68/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.

This 2006 model was originally EPA-tested under the pre-2008 2-cycle method, which didn't account for highway speeds over 60 mph, air-conditioner use, or cold starts. When EPA overhauled the test for model year 2008, city ratings fell by about 12% and highway by about 8% on average industry-wide — and EPA retroactively adjusted every 1984-2007 rating to the stricter standard so old and new cars could be compared fairly. The MPG above is already on that modern scale — the window sticker on this car when it was new likely showed a higher, pre-2008-method number.

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.

Other 2006 Subaru Legacy AWD trims

TrimFuelMPGFuel/yr
2.5L 4-cyl, S4 automatic, AWDREGULAR23$2,478
2.5L 4-cyl, 5-spd manual, AWDREGULAR22$2,591
2.5L 4-cyl, 5-spd manual, AWDPREMIUM20$3,510

EPA fuel type: Premium · class: Compact Cars · engine: 2.5L 4-cyl turbo · transmission: S5 automatic · drive: AWD · MPG retrieved 2026-07-24.