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Infiniti Q45 MPG

EPA fuel economy for 23 Infiniti Q45 trims sold from 1990 to 2006. Best ever: 18 MPG (2006 Q45). Latest model year 2006: 18 MPG combined across 2 trims.

18best combined MPG (2006)
16 / 22city / highway of the best trim
15lowest combined MPG (1993)
17model years rated
$4,300a year to fuel, cheapest 2006 trim at EPA prices

Infiniti Q45 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, every 2006 Infiniti Q45 trim costs about $4,300 a year to fuel.

2006 trimEngineTransmissionDriveFuelCombCost/yrvs cheapest
Q454.5 L, 8 cylAuto (S5)RWDPremium18$4,300cheapest
Q45 Sport4.5 L, 8 cylAuto (S5)RWDPremium18$4,300cheapest

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 Q45 MPG by year

YearBest combinedCityHwyBest trim that yearTrims
2006181622Q45, 4.5 L, 8 cyl, Auto (S5)2
2005181622Q45, 4.5 L, 8 cyl, Auto (S5)1
2004181622Q45, 4.5 L, 8 cyl, Auto (S5)1
2003181622Q45, 4.5 L, 8 cyl, Auto (S5)1
2002181623Q45, 4.5 L, 8 cyl, Auto (S5)1
2001181621Q45, 4.1 L, 8 cyl, Auto 4-spd1
2000181621Q45, 4.1 L, 8 cyl, Auto 4-spd1
1999181622Q45, 4.1 L, 8 cyl, Auto 4-spd1
1998181622Q45, 4.1 L, 8 cyl, Auto 4-spd1
1997181622Q45, 4.1 L, 8 cyl, Auto 4-spd1
1996171520Q45, 4.5 L, 8 cyl, Auto 4-spd1
1995171520Q45, 4.5 L, 8 cyl, Auto 4-spd2
1994171520Q45, 4.5 L, 8 cyl, Auto 4-spd2
1993171520Q45, 4.5 L, 8 cyl, Auto 4-spd2
1992171520Q45, 4.5 L, 8 cyl, Auto 4-spd2
1991171520Q45, 4.5 L, 8 cyl, Auto 4-spd2
1990171520Q45, 4.5 L, 8 cyl, Auto 4-spd1

Every Infiniti Q45 trim

YearTrimEngineTransmissionDriveFuelCityHwyCombCO2 g/miFuel cost/yr
2006Q454.5 L, 8 cylAuto (S5)RWDPremium162218494$4,300
2006Q45 Sport4.5 L, 8 cylAuto (S5)RWDPremium152218494$4,300
2005Q454.5 L, 8 cylAuto (S5)RWDPremium162218494$4,300
2004Q454.5 L, 8 cylAuto (S5)RWDPremium162218494$4,300
2003Q454.5 L, 8 cylAuto (S5)RWDPremium162218494$4,300
2002Q454.5 L, 8 cylAuto (S5)RWDPremium162318494$4,300
2001Q454.1 L, 8 cylAuto 4-spdRWDPremium162118494$4,300
2000Q454.1 L, 8 cylAuto 4-spdRWDPremium162118494$4,300
1999Q454.1 L, 8 cylAuto 4-spdRWDPremium162218494$4,300
1998Q454.1 L, 8 cylAuto 4-spdRWDPremium162218494$4,300
1997Q454.1 L, 8 cylAuto 4-spdRWDPremium162218494$4,300
1996Q454.5 L, 8 cylAuto 4-spdRWDPremium152017523$4,550
1995Q454.5 L, 8 cylAuto 4-spdRWDPremium152017523$4,550
1995Q45 Full-Active Suspension4.5 L, 8 cylAuto 4-spdRWDPremium141916555$4,840
1994Q454.5 L, 8 cylAuto 4-spdRWDPremium152017523$4,550
1994Q45 Full-Active Suspension4.5 L, 8 cylAuto 4-spdRWDPremium141916555$4,840
1993Q454.5 L, 8 cylAuto 4-spdRWDPremium152017523$4,550
1993Q45 Full-Active Suspension4.5 L, 8 cylAuto 4-spdRWDPremium141815592$5,160
1992Q454.5 L, 8 cylAuto 4-spdRWDPremium152017523$4,550
1992Q45 Full-Active Suspension4.5 L, 8 cylAuto 4-spdRWDPremium131715592$5,160
1991Q454.5 L, 8 cylAuto 4-spdRWDPremium152017523$4,550
1991Q45 Full-Active Suspension4.5 L, 8 cylAuto 4-spdRWDPremium131715592$5,160
1990Q454.5 L, 8 cylAuto 4-spdRWDPremium152017523$4,550

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 2006 Midsize Cars

VehicleCombinedCityHwy
2006 Toyota Prius464845
2006 Mercedes-Benz E320 Cdi272333
2006 Honda Accord262331
2006 Hyundai Elantra262331
2006 Kia Optima (2006 New Model)252131
2006 Kia Spectra252231

All Midsize Cars ranked by MPG

Questions people ask

What is the best MPG for a Infiniti Q45?

The most efficient Infiniti Q45 the EPA has rated is the 2006 Q45 at 18 MPG combined (16 city, 22 highway).

What MPG does the 2006 Infiniti Q45 get?

Every 2006 Infiniti Q45 trim is rated 18 MPG combined.

Which Infiniti Q45 has the worst fuel economy?

The 1993 Q45 Full-Active Suspension is the lowest rated at 15 MPG combined.

How much does it cost to fuel a Infiniti Q45 for a year?

At $5.16 a gallon for premium and 15,000 miles a year, every 2006 Infiniti Q45 trim costs about $4,300 a year to fuel.

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