Infiniti M56 — All Years
We have Infiniti M56 specifications on file for 3 model years, 2011–2013, covering saloon/sedan trims. EPA data lists a single engine, the 5.6L 8-cyl. Combined fuel economy runs from 22 to 23 mpg (UK) depending on year, engine and transmission. 1 of the 3 rated model years hold an overall 5-star NHTSA rating. Select a year below for full engine, fuel economy, dimensions and safety data.
| Year | Engine(s) | Fuel | MPG (UK) | CO₂ g/km | NHTSA | Recalls | Complaints |
|---|---|---|---|---|---|---|---|
| 2013 | 5.6L 8-cyl | Premium Gasoline | 22–23 | 296 | 5★ | 3 | 2 |
| 2012 | 5.6L 8-cyl | Premium Gasoline | 22–23 | 291 | 4★ | 3 | 4 |
| 2011 | 5.6L 8-cyl | Premium Gasoline | 22–23 | 291 | 4★ | 2 | 18 |
Engine History
- 5.6L 8-cyl — 2011–2013
Engines are those EPA lists for each model year; the MPG (UK) column shows the range across configurations where more than one exists.
Frequently Asked Questions
What years is the Infiniti M56 covered on this site?
We have data for 3 model years of the Infiniti M56, from 2011 to 2013.
What engines does the Infiniti M56 come with?
EPA data lists: 5.6L 8-cyl (2011–2013).
Which Infiniti M56 year has the best fuel economy?
The 2013 model returns the highest combined MPG (UK) on record here, at 23 mpg on its most efficient configuration.
Does the Infiniti M56 have a 5-star NHTSA safety rating?
Yes — the 2013 model year hold an overall 5-star NHTSA rating on record here.
Which Infiniti M56 model years have the most recalls and complaints?
The 2012 model year has the most NHTSA recall campaigns on record (3), and the 2011 has the most owner complaints (18). Counts are from NHTSA as of 6 October 2026 and change over time; complaints are unverified owner reports.
What body style is the Infiniti M56?
The Infiniti M56 is classed as a saloon/sedan on this site.
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