Infiniti Q45: MPG and fuel economy by year
The EPA has rated the Infiniti Q45 across 17 model years, from the 1990 Infiniti Q45 through the 2006 Infiniti Q45. The most recent 2006 Infiniti Q45 returns 18 combined MPG.
Pick a year below to open the full Infiniti Q45 page for that model year. Each year page covers combined, city, and highway MPG, the trim variants the EPA rates separately, the annual fuel cost across three driving patterns, and a year-over-year comparison so you can see whether the car has improved.
Fuel economy by model year
Combined MPG, city MPG, highway MPG, and the EPA's estimated annual fuel cost for every model year of the Infiniti Q45. Click any year to see the full breakdown for that model year, including trim variants, the drivetrain, and a comparison against other vehicles in its segment.
| Year | Model | Combined MPG | City | Highway | Annual fuel cost |
|---|---|---|---|---|---|
| 2006 | 2006 Infiniti Q45 | 18 MPG | 16 MPG | 22 MPG | $3,850 |
| 2005 | 2005 Infiniti Q45 | 18 MPG | 16 MPG | 22 MPG | $3,850 |
| 2004 | 2004 Infiniti Q45 | 18 MPG | 16 MPG | 22 MPG | $3,850 |
| 2003 | 2003 Infiniti Q45 | 18 MPG | 16 MPG | 22 MPG | $3,850 |
| 2002 | 2002 Infiniti Q45 | 18 MPG | 16 MPG | 23 MPG | $3,850 |
| 2001 | 2001 Infiniti Q45 | 18 MPG | 16 MPG | 21 MPG | $3,850 |
| 2000 | 2000 Infiniti Q45 | 18 MPG | 16 MPG | 21 MPG | $3,850 |
| 1999 | 1999 Infiniti Q45 | 18 MPG | 16 MPG | 22 MPG | $3,850 |
| 1998 | 1998 Infiniti Q45 | 18 MPG | 16 MPG | 22 MPG | $3,850 |
| 1997 | 1997 Infiniti Q45 | 18 MPG | 16 MPG | 22 MPG | $3,850 |
| 1996 | 1996 Infiniti Q45 | 17 MPG | 15 MPG | 20 MPG | $4,050 |
| 1995 | 1995 Infiniti Q45 | 17 MPG | 15 MPG | 20 MPG | $4,050 |
| 1994 | 1994 Infiniti Q45 | 17 MPG | 15 MPG | 20 MPG | $4,050 |
| 1993 | 1993 Infiniti Q45 | 17 MPG | 15 MPG | 20 MPG | $4,050 |
| 1992 | 1992 Infiniti Q45 | 17 MPG | 15 MPG | 20 MPG | $4,050 |
| 1991 | 1991 Infiniti Q45 | 17 MPG | 15 MPG | 20 MPG | $4,050 |
| 1990 | 1990 Infiniti Q45 | 17 MPG | 15 MPG | 20 MPG | $4,050 |
How the Infiniti Q45 compares against the Midsize Cars class
Buyers usually compare the Infiniti Q45 against other cars in the same EPA class. The list below shows the most efficient cars in the Midsize Cars class for the 2006 model year, the latest year on this page. Each link opens the full page for that car.
Source: U.S. EPA fuel economy dataset. Annual fuel cost assumes 15,000 miles of driving per year and a 55% city, 45% highway split.