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Infiniti M45 MPG

EPA fuel economy for 10 Infiniti M45 trims sold from 2003 to 2010. Best ever: 18 MPG (2010 M45). Latest model year 2010: 16 to 18 MPG combined across 2 trims.

18best combined MPG (2010)
16 / 21city / highway of the best trim
16lowest combined MPG (2010)
8model years rated
$4,300a year to fuel, cheapest 2010 trim at EPA prices

Infiniti M45 fuel cost calculator

Enter what you pay for fuel and how far you drive in a year. The starting prices are the ones the EPA uses for its own yearly fuel-cost estimates. Every cost on this page updates as you type.

At $5.16 a gallon for premium and 15,000 miles a year, the cheapest 2010 Infiniti M45 to fuel is the M45, 4.5 L, 8 cyl (18 MPG) at $4,300 a year. The M45x, 4.5 L, 8 cyl (16 MPG) costs $4,840, so the thriftier trim saves $540 a year and $2,700 over five years.

2010 trimEngineTransmissionDriveFuelCombCost/yrvs cheapest
M454.5 L, 8 cylAuto (S5)RWDPremium18$4,300cheapest
M45x4.5 L, 8 cylAuto (S5)AWDPremium16$4,840+$540

Cost per year is miles per year divided by the EPA combined rating, times your fuel price; electric vehicles use the EPA's kWh per 100 miles instead. Rounded to the nearest $10. Your prices are kept in this browser only.

Infiniti M45 MPG by year

YearBest combinedCityHwyBest trim that yearTrims
2010181621M45, 4.5 L, 8 cyl, Auto (S5)2
2009181621M45, 4.5 L, 8 cyl, Auto (S5)2
2008181621M45, 4.5 L, 8 cyl, Auto (S5)2
2007181621M45, 4.5 L, 8 cyl, Auto (S5)1
2006181621M45, 4.5 L, 8 cyl, Auto (S5)1
2004181622M45, 4.5 L, 8 cyl, Auto (S5)1
2003181622M45, 4.5 L, 8 cyl, Auto (S5)1

Every Infiniti M45 trim

YearTrimEngineTransmissionDriveFuelCityHwyCombCO2 g/miFuel cost/yr
2010M454.5 L, 8 cylAuto (S5)RWDPremium162118494$4,300
2010M45x4.5 L, 8 cylAuto (S5)AWDPremium142016555$4,840
2009M454.5 L, 8 cylAuto (S5)RWDPremium162118494$4,300
2009M45x4.5 L, 8 cylAuto (S5)4WD/AWDPremium142016555$4,840
2008M454.5 L, 8 cylAuto (S5)RWDPremium162118494$4,300
2008M45x4.5 L, 8 cylAuto (S5)4WD/AWDPremium142016555$4,840
2007M454.5 L, 8 cylAuto (S5)RWDPremium162118494$4,300
2006M454.5 L, 8 cylAuto (S5)RWDPremium162118494$4,300
2004M454.5 L, 8 cylAuto (S5)RWDPremium162218494$4,300
2003M454.5 L, 8 cylAuto (S5)RWDPremium162218494$4,300

CO2 is tailpipe grams per mile from the EPA test. Fuel cost per year uses the prices and miles in the calculator above (the EPA's own prices and 15,000 miles a year until you change them); blank when the fuel has no price here (hydrogen, natural gas).

Compare with other 2010 Large Cars

VehicleCombinedCityHwy
2010 Honda Accord252131
2010 Hyundai Sonata252232
2010 Toyota Avalon231928
2010 BMW 535i Gran Turismo221928
2010 Chevrolet Impala221829
2010 Ford Taurus FWD221828

All Large Cars ranked by MPG

Questions people ask

What is the best MPG for a Infiniti M45?

The most efficient Infiniti M45 the EPA has rated is the 2010 M45 at 18 MPG combined (16 city, 21 highway).

What MPG does the 2010 Infiniti M45 get?

2010 Infiniti M45 trims range from 16 to 18 MPG combined, depending on engine, transmission and drivetrain.

Which Infiniti M45 has the worst fuel economy?

The 2010 M45x is the lowest rated at 16 MPG combined.

How much does it cost to fuel a Infiniti M45 for a year?

At $5.16 a gallon for premium and 15,000 miles a year, the cheapest 2010 Infiniti M45 to fuel is the M45, 4.5 L, 8 cyl (18 MPG) at $4,300 a year. The M45x, 4.5 L, 8 cyl (16 MPG) costs $4,840, so the thriftier trim saves $540 a year and $2,700 over five years.

More from Infiniti: every Infiniti model. Fuel types on this model: Premium. EPA classes: Compact Cars, Large Cars.