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2012 INFINITI M56

$14,429 — $25,045 USED
Sedan
5 Seats
20 MPG
(Combined)
Key specs of the base trim
 — 
Compare 1 trims

Overview

Is this the car for you?
(4.9) 7 reviews

The Good

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

The Bad

  • Smallish trunk
  • Short backseat cushions
2012 INFINITI M56 exterior side view

What to Know

about the 2012 INFINITI M56
  • 420-hp, 5.6-liter V-8
  • RWD or AWD
  • Seven-speed automatic
  • Available Blind Spot Intervention system
  • 330-hp M37 also available

Our Take

from the Cars.com expert editorial team

Cars.com's Joe Wiesenfelder takes a look at the 2012 Infiniti M56X.It competes with the Audi A6 and BMW 550.

Vehicle Overview

Inspired by the Essence concept the automaker revealed at the 2009 Geneva International Motor Show, the five-seat M is Infiniti's flagship sport sedan. The M is available in two iterations. The M37 uses a 3.7-liter V-6 while the M56 has a 5.6-liter V-8. The M56 competes with the BMW 5 Series, Mercedes-Benz E-Class and Jaguar XF. The M37 is covered separately in the Cars.com Research section.

New for 2012
There are no significant changes for 2012.

Exterior
The M’s styling combines the taller presence of the previous-generation M with some of the curves seen on the current G37 sedan. A large front grille sits low on the M57's face, recalling the grille on the Essence. In back, the tail rises slightly at its center. Exterior features include:

  • Eighteen-inch alloy wheels
  • Dual exhaust pipes
  • Xenon high-intensity-discharge headlights
  • Power-folding side mirrors
  • Available 20-inch wheels
  • Available darker grille finish, darker headlights and unique bumpers

Interior
The M's dash falls away from the driver, resulting in a spacious, open cabin. A wide panel with controls for the navigation and climate systems sits closer compared with the prior M, while the transmission retains its 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 fea...

Vehicle Overview

Inspired by the Essence concept the automaker revealed at the 2009 Geneva International Motor Show, the five-seat M is Infiniti's flagship sport sedan. The M is available in two iterations. The M37 uses a 3.7-liter V-6 while the M56 has a 5.6-liter V-8. The M56 competes with the BMW 5 Series, Mercedes-Benz E-Class and Jaguar XF. The M37 is covered separately in the Cars.com Research section.

New for 2012
There are no significant changes for 2012.

Exterior
The M’s styling combines the taller presence of the previous-generation M with some of the curves seen on the current G37 sedan. A large front grille sits low on the M57's face, recalling the grille on the Essence. In back, the tail rises slightly at its center. Exterior features include:

  • Eighteen-inch alloy wheels
  • Dual exhaust pipes
  • Xenon high-intensity-discharge headlights
  • Power-folding side mirrors
  • Available 20-inch wheels
  • Available darker grille finish, darker headlights and unique bumpers

Interior
The M's dash falls away from the driver, resulting in a spacious, open cabin. A wide panel with controls for the navigation and climate systems sits closer compared with the prior M, while the transmission retains its 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
  • USB/iPod connectivity
  • Power heated and cooled front seats
  • Leather upholstery
  • Moonroof
  • Backup camera
  • Navigation system
  • Available Bose surround-sound 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
  • Available 14-inch front and 13.8-inch rear disc brakes

Safety
Blind spot and lane departure warning systems are optional on the 2012 M56. So 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, similar to Lane Departure Prevention
  • Optional adaptive headlights
  • Available collision warning system

Consumer Reviews

What drivers are saying

4.9
7 reviews — Read All reviews
Exterior Styling
(4.7)
Performance
(4.9)
Interior Design
(4.6)
Comfort
(4.7)
Reliability
(5.0)
Value For The Money
(4.9)
(5.0)

Best car I've ever owned

by patrickclick on February 24, 2018

This is by far the best car I've ever owned. I'm glad I've had the experience of owning not one but two great cars by Infiniti! Read full review

(5.0)

Better alternative to BMW 550 and MB E550

by Serega13 from Woodstock, MD on January 31, 2018

This car is a reasonable reliable and more affordable alternative to a BMW 550 and similar sedans. The power is adequate at 420, I was able to up to about 475hp and 525 torque with a few minor updates ... Read full review

Safety

Recalls and crash tests

Recalls

The 2012 INFINITI M56 currently has 1 recall


Crash and Rollover Test Ratings

Based on 2012 INFINITI M56 Base

IIHS rates vehicles good, acceptable, marginal, or poor.

Head Restraints and Seats

Dynamic Rating
good
Overall Rear
good
Seat Head/Restraint Geometry
good

Moderate overlap front

Chest
good
Head/Neck
good
Left Leg/Foot
good
Overall Front
good
Restraints
good
Right Leg/Foot
good
Structure/safety cage
good

Other

Roof Strength
good

Side

Driver Head Protection
good
Driver Head and Neck
good
Driver Pelvis/Leg
good
Driver Torso
good
Overall Side
good
Rear Passenger Head Protection
good
Rear Passenger Head and Neck
good
Rear Passenger Pelvis/Leg
good
Rear Passenger Torso
good
Structure/safety cage
good
Insurance Institute for Highway Safety (IIHS) is a nonprofit research and communications organization funded by auto insurers.

Warranty

New car and certified pre-owned programs by INFINITI

New Car Program Benefits

  • Bumper-to-Bumper

    48 months / 60,000 miles

  • Powertrain

    72 months / 70,000 miles

  • Roadside Assistance

    48 months / unlimited distance

Certified Pre-Owned Program Benefits

  • Maximum Age/Mileage

    Less than 6 model years/less than 70,000 miles

  • Basic Warranty Terms

    6 years/unlimited mileage

  • Powertrain

    72 months/70,000 miles

  • Dealer Certification Required

    167-point inspection

  • Roadside Assistance

    Yes

  • View All CPO Program Details

Latest 2012 M56 Stories

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All Model Years for the INFINITI M56

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Cars.com Car Seat Check

Certified child passenger safety technicians conduct hands-on tests of a car’s Latch system and check the vehicle’s ability to accommodate different types of car seats. The M56 received the following grades on a scale of A-F.*
* This score may not apply to all trims, especially for vehicles with multiple body styles that affect the space and design of the seating.

Warranty FAQs

What is a Bumper-to-Bumper warranty?

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.

What is a Powertrain warranty?

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.

What is included in 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).

What other services could be included in a warranty?

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.

What does CPO mean?

A certified pre-owned or CPO car has been inspected to meet minimum quality standards and typically includes some type of warranty. While dealers and third parties certify cars, the gold standard is an automaker-certified vehicle that provides a factory-backed warranty, often extending the original coverage. Vehicles must be in excellent condition and have low miles and wear to be certified, which is why off-lease vehicles feed many CPO programs.

See also the latest CPO incentives by automaker