Infiniti M45x MPG by year — every rating on record
The Infiniti M45x has a combined EPA fuel economy rating for 3 model years, from 2008 to 2010. Across those years its best rated version returned 16 mpg (2008) and its thirstiest returned 16 mpg (2008). The EPA record holds 3 configurations for this nameplate, most recently a Large Cars.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 2008 | 1 | 16 mpg | 16 mpg | #30 of 44 (33th pct) | 4-Wheel or All-Wheel Drive | Premium | Large Cars |
| 2009 | 1 | 16 mpg | 16 mpg | #33 of 45 (27th pct) | 4-Wheel or All-Wheel Drive | Premium | Large Cars |
| 2010 | 1 | 16 mpg | 16 mpg | #35 of 47 (26th pct) | All-Wheel Drive | Premium | Large Cars |
Where it has stood in its class
Ranked against every other nameplate the EPA filed under the same class that year. The Infiniti M45x placed highest in 2008 at #30 of 44, and lowest in 2010 at #35 of 47. It spent 0 of its 3 ranked years in the top half of its class.
Every configuration on record
All 3 configurations EPA lists for this nameplate, newest first.
| Year | Configuration | Engine detail | City | Highway | Combined | Gallons/yr | Barrels/yr | EPA fuel cost/yr | CO2 g/mi | GHG |
|---|---|---|---|---|---|---|---|---|---|---|
| 2010 | 4.5L 8-cyl All-Wheel Drive Automatic (S5) Premium | PR | 14 | 20 | 16 | 718.8 | 18.6 | $4,850 | 555.4375 | n/a |
| 2009 | 4.5L 8-cyl 4-Wheel or All-Wheel Drive Automatic (S5) Premium | 4.5L 8-cyl | 14 | 20 | 16 | 718.8 | 18.6 | $4,850 | 555.4375 | n/a |
| 2008 | 4.5L 8-cyl 4-Wheel or All-Wheel Drive Automatic (S5) Premium | 4.5L 8-cyl | 14 | 20 | 16 | 718.8 | 18.6 | $4,850 | 555.4375 | n/a |
What M45x fuel costs over a year
At the EPA's 11,500 miles a year, the 2010 Infiniti M45x burns 719 to 719 gallons depending on configuration. Below is what that costs at three pump prices, and how much more the thirstiest configuration costs than the most efficient one.
| Pump price | Most efficient | Thirstiest | Spread |
|---|---|---|---|
| $3.00/gal | $2,156 | $2,156 | $0 |
| $3.50/gal | $2,516 | $2,516 | $0 |
| $4.00/gal | $2,875 | $2,875 | $0 |
EPA’s own estimate for the 2010 model year is $4,850 to $4,850 a year in fuel, or $13,000 more than the average new vehicle over five years.
How it compares with other Large Cars
Across the 305 nameplates EPA classifies as Large Cars, the median best combined rating is 21 mpg. At 16 mpg the Infiniti M45x is 5 mpg below the median, which is worth about $599 a year at $3.50 a gallon.
- All Large Cars rankings — every nameplate in the class, best to worst.
Other Infiniti nameplates
Every Infiniti model compared → — all nameplates ranked by best combined rating, with what each one costs a year.