• (4.8) 5 reviews
  • MSRP: $12,189$27,789
  • Body Style: Sedan
  • Combined MPG: 19
  • Engine: 420-hp, 5.6-liter V-8 (premium)
  • Drivetrain: All-wheel Drive
  • Transmission: 7-speed automatic w/OD and auto-manual

Our Take on the 2011 INFINITI M56

Our Take

Infiniti redesigned its M sedan for the 2011 model year. Inspired by the Essence concept the automaker revealed at the 2009 Geneva International Motor Show, the new M is longer, more powerful and more fuel efficient than its predecessor. The M caps a wide range of new choices for anyone shopping ... Read Full Report

What We Don't Like

  • Not as distinctive looking as before
  • Smallish trunk
  • Short backseat cushions

Notable Features

  • Redesigned for 2011
  • 420-hp, 5.6-liter V-8
  • RWD or AWD
  • Seven-speed automatic
  • Available Blind Spot Intervention system
  • 330-hp M37 also available (covered separately)


Our Expert Reviews

The 2011 Infiniti M37 and M56 replace the 2010 M35 and M45. The difference in name reflects switches to a 3.7-liter V-6 and a 5.6-liter V-8, both of which provide more power, as you'd expect. Many other upgrades come with this complete redesign. (See the two model years compared.) Though beautifully styled inside and outside, the redesigned 2011 Infiniti M sport sedan is frustrated by some... Read full review for the 2011 INFINITI M 56

Consumer Reviews


Average based on 5 reviews

Write a Review

M56S owner

by JW from Maryland on August 18, 2010

Overall very happy with the car. Fun to drive, it really is like a 4 door sports car. I have driven it 2,500 miles at this point. The only problem to date is that the battery failed ( not died ). Deal... Read Full Review

1 Trim Levels Available

Wondering which configuration is right for you?
Our 2011 INFINITI M56 trim comparison will help you decide.


Crash-Test Reports


There is currently 1 recall for this car.

Safety defects and recalls are relatively common. Stay informed and know what to do ahead of time.

Safety defects and recalls explained

Warranty Coverage





Roadside Assistance Coverage


What you should get in your warranty can be confusing. Make sure you are informed.

Learn More About Warranties

Warranties Explained


Often called a basic warranty or new-vehicle warranty, a bumper-to-bumper policy covers components like air conditioning, audio systems, vehicle sensors, fuel systems and major electrical components. Most policies exclude regular maintenance like fluid top offs and oil changes, but a few brands have separate free-maintenance provisions, and those that do offer them is slowly rising. Bumper-to-bumper warranties typically expire faster than powertrain warranties.


Don't be misled a 10-year or 100,000-mile powertrain warranty doesn't promise a decade of free repairs for your car. It typically covers just the engine and transmission, along with any other moving parts that lead to the wheels, like the driveshaft and constant velocity joints. Some automakers also bundle seat belts and airbags into their powertrain warranties. With a few exceptions, powertrain warranties don't cover regular maintenance like engine tuneups and tire rotations.

Roadside Assistance

Some automakers include roadside assistance with their bumper-to-bumper or powertrain warranties, while others have separate policies. These programs cover anything from flat-tire changes and locksmith services to jump-starts and towing. Few reimburse incidental costs like motel rooms (if you have to wait for repairs).

Free Scheduled Maintenance

Some automakers include free scheduled maintenance for items such as oil changes, air filters and tire rotations. Some include consumables including brake pads and windshield wipers; others do not. They are typically for the first couple of years of ownership of a new car.

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