Infiniti M45 MPG by Year & Engine (EPA)
EPA fuel-economy ratings for every rated Infiniti M45 model year from 2003 to 2010 — each engine and transmission with its official city, highway and combined figures. Over these years the M45 has been offered with 4.5L 8-cyl engines; every rated year lands at 18 MPG combined. Every rated gas version calls for premium gasoline. Data: U.S. Department of Energy & EPA, fueleconomy.gov; prices are live medians from VehiSales listings.
Infiniti M45 fuel economy by year
| Year | Combined | Engines | Median used price | For sale |
|---|---|---|---|---|
| 2010 | 16–18 MPG | 4.5L 8-cyl | — | — |
| 2009 | 16–18 MPG | 4.5L 8-cyl | — | — |
| 2008 | 16–18 MPG | 4.5L 8-cyl | — | — |
| 2007 | 18 MPG | 4.5L 8-cyl | — | — |
| 2006 | 18 MPG | 4.5L 8-cyl | — | — |
| 2004 | 18 MPG | 4.5L 8-cyl | — | — |
| 2003 | 18 MPG | 4.5L 8-cyl | — | — |
2010 Infiniti M45: engines & MPG
The 2010 M45 was EPA-rated in 2 versions (4.5L 8-cyl), with combined economy from 16 to 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M45 | 4.5L 8-cyl | Automatic (S5) | Premium | 16 | 21 | 18 MPG |
| M45x | 4.5L 8-cyl | Automatic (S5) | Premium | 14 | 20 | 16 MPG |
2009 Infiniti M45: engines & MPG
The 2009 M45 was EPA-rated in 2 versions (4.5L 8-cyl), with combined economy from 16 to 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M45 | 4.5L 8-cyl | Automatic (S5) | Premium | 16 | 21 | 18 MPG |
| M45x | 4.5L 8-cyl | Automatic (S5) | Premium | 14 | 20 | 16 MPG |
2008 Infiniti M45: engines & MPG
The 2008 M45 was EPA-rated in 2 versions (4.5L 8-cyl), with combined economy from 16 to 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M45 | 4.5L 8-cyl | Automatic (S5) | Premium | 16 | 21 | 18 MPG |
| M45x | 4.5L 8-cyl | Automatic (S5) | Premium | 14 | 20 | 16 MPG |
2007 Infiniti M45: engines & MPG
The 2007 M45 was EPA-rated in 1 version (4.5L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M45 | 4.5L 8-cyl | Automatic (S5) | Premium | 16 | 21 | 18 MPG |
2006 Infiniti M45: engines & MPG
The 2006 M45 was EPA-rated in 1 version (4.5L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M45 | 4.5L 8-cyl | Automatic (S5) | Premium | 16 | 21 | 18 MPG |
2004 Infiniti M45: engines & MPG
The 2004 M45 was EPA-rated in 1 version (4.5L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M45 | 4.5L 8-cyl | Automatic (S5) | Premium | 16 | 22 | 18 MPG |
2003 Infiniti M45: engines & MPG
The 2003 M45 was EPA-rated in 1 version (4.5L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M45 | 4.5L 8-cyl | Automatic (S5) | Premium | 16 | 22 | 18 MPG |
Frequently asked questions
What MPG does an Infiniti M45 get?
Every rated M45 year comes in at 18 MPG combined.
What engines does the 2010 Infiniti M45 have?
The 2010 M45 was EPA-rated with 4.5L 8-cyl engines — see the 2010 table above for each version's exact city/highway figures.
Does the Infiniti M45 require premium gas?
Yes — every EPA-rated gas M45 version specifies premium gasoline.
https://vehisales.com/research/fuel-economy/infiniti/m45.
See also: Infiniti M45 hub — live listings, prices & reliability · Most fuel-efficient cars by segment · Model price trends. Media inquiries: [email protected].