Against 293 other V8 cars rated 2011–2013, the M56 beats their 16.5 mpg average by 2.5 mpg, about $306 a year.
Every Infiniti M56 engine, compared
The Infiniti M56 was rated in a single specification, so its gas mileage does not vary by version — only by model year. Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 5.6L 8-cyl | 16 / 24.3 | 2011–2013 | $2,021 |
What that actually costs
| Measure | Value |
|---|---|
| Cost per mile (2013) | $0.168 |
| Fuel per year | $2,021 |
| Fuel over five years | $10,105 |
| Against other V8 cars, 2011–2013 | −$306 a year |
| EPA's own estimate | $4,050 a year |
City or highway — who is this car for
The 2013 Infiniti M56 gives up 8 mpg in town: 24 on the highway against 16 in the city, $800 a year if every mile were city driving.
| Measure | Value | Reading |
|---|---|---|
| City (2013) | 16 mpg | $2,400 a year if you only drive in town |
| Highway | 24 mpg | $1,600 a year if you mostly commute |
| Gap | +8 mpg (50%) | Wide — this car dislikes traffic |
How the M56 changed over the years
Combined figure across the 3 model years the M56 was rated in, all of them at 19 mpg.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2013 | 16 / 24 | 1 | $2,021 | |
| 2012 | 16 / 24 | 1 | $2,021 | |
| 2011 | 16 / 25 | 1 | $2,021 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 3 EPA ratings of the Infiniti M56 — 1 engine across 2011–2013. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $4,050. Full method.
Frequently asked questions
What mpg does the 2013 Infiniti M56 get?
19 mpg combined, 16 city and 24 highway, per EPA. Across every year since 2011 the M56 has averaged 19 mpg.
Is the 2013 M56 more efficient than the 2012?
About the same: 19 against 19 mpg combined.
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