• (5.0) 3 reviews
  • Inventory Prices: $23,597–$31,745
  • 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 Latest Model 2013 INFINITI M56

What We Don't Like

  • Smallish trunk
  • Short backseat cushions

Notable Features

  • 420-hp, 5.6-liter V-8
  • RWD or AWD
  • Seven-speed automatic
  • Available Blind Spot Intervention system

2013 INFINITI M56 Reviews

Vehicle Overview

The M sedan is Infiniti's flagship model, available as the V-8-powered M56 covered in this report and as the V-6 M37 model and M35h hybrid that are covered separately in the Cars.com Research section. The M56 and M37 are available with rear or all-wheel drive, and the M35h comes only with rear-wheel drive. The M sedan was redesigned for the 2011 model year and competes with luxury sedans such as the BMW 5 and 7 Series, Lexus LS and Mercedes-Benz E- and S-Class.
New for 2013
The optional Sport Package is available on all-wheel-drive models and includes a firmer suspension, stronger brakes, 20-inch wheels and a different front design among its features. The Premium Package adds rear sonar and Infiniti Connection, a telematics system that can unlock doors remotely among other things. A new Performance Tire and Wheel Package includes 20-inch rims, performance tires and larger brakes.
The M56's styling combines the taller presence of the previous-generation M with some of the curves seen on the current G37 sedan. A large grille sits low on the M's face, recalling the grille on the Essence, the concept vehicle that foretold the current model. In back, the tail rises slightly at the center. Exterior features include:

  • Eighteen-inch alloy wheels
  • Xenon high-intensity-discharge headlights
  • Heated, power-folding side mirrors
  • Available 20-inch wheels

The M's dashboard falls away from the driver, resulting in a spacious, open cabin. A wide panel with controls for the climate and optional navigation systems sits closer compared with the prior M, while the transmission retains a short leather-wrapped gearshift. Upscale available materials include a suede-like headliner, faux-leather-stitched dashboard panels and wood trim with interlaced silver-powdered accents. Optional semi-aniline leather feels similar to a leather sofa, Infiniti says. Interior features include:

  • CD stereo with six speakers
  • USB/iPod connectivity and Bluetooth
  • Standard heated and cooled front seats
  • Leather upholstery
  • Power moonroof
  • Push-button start
  • Backup camera 
  • Available navigation system
  • Available Bose stereo

Under the Hood
The M56's 5.6-liter V-8 makes 420 horsepower and 417 pounds-feet of torque; it pairs with a seven-speed automatic transmission. A knob controller, dubbed Infiniti Drive, allows drivers to program drivetrain settings, including accelerator sensitivity and transmission shift points, to Standard, Eco, Sport or Snow modes. Eco mode provides accelerator resistance to the driver's right foot if it detects inefficient driving habits; it also includes a yellow-to-green gauge indicator to show how efficiently you're driving. Mechanical features include:

  • Available sport-tuned suspension
  • Available four-wheel steering (rear-drive only)

Blind spot and lane departure warning systems are optional, as is Infiniti's Lane Departure Prevention system, which uses light braking to keep the M56 from drifting into an unintended lane. Safety features include:

  • Standard six airbags
  • Standard active front head restraints
  • Standard antilock brakes 
  • Standard traction control
  • Standard electronic stability system
  • Optional Blind Spot Intervention system
  • Optional adaptive headlights 
  • Available collision warning system

Consumer Reviews


Average based on 3 reviews

Write a Review


by ac5 from Tyler, Texas on October 30, 2017

This is close to a dream car for me. I could find so very few M56's on the market. I can see why people are holding on to them. I really like the navigation system, the weather alerts, the back win... Read Full Review

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1 Trim Available

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Wondering which configuration is right for you?
Our 2013 INFINITI M56 trim comparison will help you decide.

INFINITI M56 Articles

2013 INFINITI M56 Safety Ratings

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

Service & Repair

Estimated Service & Repair cost: $3,000 per year.

Save on maintenance costs and do your own repairs.

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.

Other Years