Infiniti Q40 MPG & Fuel Economy

The 2015 Infiniti Q40 gets up to 22 MPG combined (19 city / 27 highway) in EPA testing.

Latest model year (2015):

The Infiniti Q40 gets up to 22 MPG combined (19 city / 27 highway) in the Auto (S7), 6 cyl, 3.7 L trim.

Verifiedfueleconomy.gov · Verified August 11, 2026

Infiniti Q40 MPG — All Years

YearTrimEngineFuelCity (MPG)Hwy (MPG)Combined (MPG)
2015Auto (S7), 6 cyl, 3.7 L6 3.7LPremium Gasoline192722
2015Auto (S7), 6 cyl, 3.7 L6 3.7LPremium Gasoline182520

Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.

Infiniti Q40 MPG FAQ

What is the MPG of the Infiniti Q40?

The Infiniti Q40 gets up to 22 MPG combined (19 city / 27 highway) in the 2015 model year. Fuel economy varies by engine and trim — see the full table above for details.

Which Infiniti Q40 trim has the best fuel economy?

The Auto (S7), 6 cyl, 3.7 L trim offers the best combined fuel economy at 22 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.

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