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Key specs

Base trim shown


The good:

  • Impressive technology
  • User-friendly navigation system
  • Performance potential
  • Reputation for reliability

The bad:

  • Smallish trunk
  • Short backseat cushions

2 trims

Starting msrp listed lowest to highest price

Wondering which trim is right for you?

Our 2013 INFINITI M56 trim comparison will help you decide.

Notable features

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

2013 INFINITI M56 review: Our expert's take

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

Rating breakdown (out of 5):
  • Comfort 4.5
  • Interior design 4.5
  • Performance 5.0
  • Value for the money 4.5
  • Exterior styling 4.7
  • Reliability 4.7

Most recent consumer reviews


Great look with awesome power

Good exterior design, Love the interior design and the comfort of the driver and passenger seats. The tech is good but too cumbersome have to issue too many commands when inputting info. Overall a very good car would def recommend and the power surge is incredible. If you want a great car you don't see at every red light this is it. You will stand out and for good reason.



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 window electric shade, the Bose sound system, etc. The 420 horsepower makes me laugh every time I really step on the pedal. This car will get up and go!



Beautiful car, and the performance is incredible. The design is superb, and it feels great. I traded in my 2008 M45x, which I loved, and the difference between the two is beyond my expectations.

See all 4 consumer reviews


New car and Certified Pre-Owned programs by INFINITI
New car program benefits
48 months/60,000 miles
84 months/unlimited distance
72 months/70,000 miles
Roadside assistance
48 months/unlimited distance
Certified Pre-Owned program benefits
Maximum age/mileage
Months from In-Service Date (ISD): Less than or equal to 60 months from ISD | Vehicle Mileage: Less than or equal to 15,000 Miles | Greater than 15,000 Miles but less than or equal to 60K miles
Basic warranty terms
6 years/75K miles from original ISD | 6 years/unlimited miles from original ISD
72 months/70,000 miles
Dealer certification required
167-point inspection
Roadside assistance
View all cpo program details

Have questions about warranties or CPO programs?