2012 Infiniti M56 problems
The Infiniti M is a line of mid-size luxury (executive) cars from the Infiniti luxury division of Nissan. From 2013 (model year 2014) on it has been marketed as the Infiniti Q70, reflecting the company's new naming scheme.
The first iteration was the M30 Coupé/Convertible, which were rebadged JDM Nissan Leopard. After a long hiatus, the M nameplate was used for Infiniti's mid-luxury sedans (executive cars). First was the short-lived M45 sedan, a rebadged version of the Japanese-spec Nissan Gloria. The next generations, the M35/45 and M37/56/35h/30d, became the flagship of the Infiniti brand and are based on the JDM Nissan Fuga.
First generation (1989–1992)
The Infiniti M30 was a 2-door coupé based on the Japanese market Nissan Leopard (chassis code F31). It was launched in 1989 for the 1990 model year as a luxury coupe alternative to the Infiniti Q45, and was intended to be an alternative to the Lexus SC and Acura Legend coupe for the North American market.
Unlike its competitors that were designed with the American market in mind and were launched as brand-new models, the M30 was based on a somewhat dated platform that was originally designed for the Japanese market; when the Leopard was imported to the United States, few changes were made to the exterior but the interior was revised to better suit American tastes; a leather interior was standard in the M30, and several features in the Leopard such as a center-mounted television screen and a digital instrument cluster weren't available in the M30 as those features were perceived as gimmicks in western car markets.
The M30's angular design aesthetics and on-road performance were viewed as outdated, especially considering a redesigned Acura Legend coupe was launched in 1991. The interior came in for criticism for its outdated ergonomics and lack of room. While the Japanese-market Leopard had received a new dashboard along with the 1988 facelift, economics precluded making a left-hand-drive version of the new dashboard and the M30 was instead fitted with the LHD version of the R31 Skyline's rectilinear dashboard, first presented in 1985.
The M30 made up for these deficiencies in its somewhat lower price; whereas the 1990 Acura Legend coupe started at $27,325 before options and the 1990 BMW 325i started at $24,650 before options, the M30 started at $23,500, and had no factory options, per Infiniti's pricing structure used at the time. Dealerships offered an in-car cellular telephone and in-dash CD player as optional accessories, amongst other items.
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Common 2012 Infiniti M56 problems
The 2012 Infiniti M56 has been reported to have several common issues, including transmission problems and electrical system issues.
One of the most notable issues is with the car's transmission. Many owners have reported problems with the transmission, including jerking or slipping during gear changes, and in some cases, complete failure of the transmission. This issue is particularly prevalent in earlier model years, and Infiniti has issued several recalls and technical service bulletins in an attempt to address it. If you experience transmission issues, it is important to address them promptly to avoid further damage and expensive repairs.
Another common issue with the Infiniti M56 is related to the electrical system. Some owners have reported problems with the car's battery draining quickly, even when the car is not in use. This can be caused by a variety of factors, including faulty wiring or a malfunctioning component in the electrical system. If you experience electrical issues, it is important to have the system inspected and repaired by a qualified mechanic as soon as possible to avoid further damage.
In addition to transmission and electrical issues, some owners have reported problems with the car's suspension and steering system, including excessive noise or vibration during driving. This can be caused by a variety of factors, including worn or damaged suspension components or issues with the car's alignment. If you experience suspension or steering issues, it is important to have the system inspected and repaired by a qualified mechanic as soon as possible to ensure safe and reliable operation of the vehicle.
Some owners have also reported problems with the car's fuel system, including leaks or pump failures. If you experience fuel system issues, it is important to have the system inspected and repaired by a qualified mechanic as soon as possible to avoid further damage and ensure safe and reliable operation of the vehicle.
Finally, some owners have reported problems with the car's brakes and tires, including premature wear and tear, and alignment issues. If you experience brake or tire issues, it is important to have the system inspected and repaired by a qualified mechanic as soon as possible to ensure safe and reliable operation of the vehicle.
Despite these issues, the Infiniti M56 remains a popular choice among luxury car buyers. With its powerful engine, comfortable interior, and advanced technology features, it offers a unique combination of performance and luxury that is hard to find in other vehicles. As with any car, regular maintenance and repairs are key to keeping the Infiniti M56 running smoothly and avoiding costly repairs down the road.
Are M56 reliable?
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 which is pretty amazing for a NA 5.6 engine.
How much is maintenance on Infiniti M56?
The annual maintenance cost of an INFINITI M56 is $704.
What is the mileage on Infiniti M56?
Compare Side-by-Side
| 19 | MPG | |
|---|---|---|
| 16 | 25 | |
| combined city/highway | city | highway |
How much horsepower does a 2012 Infiniti M56 have?
420 hp2012 INFINITI M56 / Horsepower
Powering the 2012 M56 is a 5.6-liter V-8 making 420 hp and 417 lb-ft of torque. That amount of power makes the M56 a luxury sports missile in a straight line.
2012 Infiniti M56 car problems categorized by type of issue
After analyzing all complaints sent to the NHTSA and researching popular Infiniti M56 problems, we found that the most common problems with these 2023 model year vehicles are:
- Engine problems
- Electrical system problems
- Fuel/propulsion system problems
- Steering problems
- Unknown or other problems
The graph below shows statistics for all 2012 Infiniti M56 vehicle components and the number of complaints received.
2012 Infiniti M56 complaints
The NHTSA has received 4 complaints about various vehicle components related to the 2012 Infiniti M56.
ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM PROBLEM
- Date Of Incident: 2022-07-17
- VIN: JN1AY1AP0CM
- Components: ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM
- Summary: My 2012 Infiniti M56 is having the same issues as the recall number 11V592000 My car is currently at an Infiniti dealership. It was noted that it was low on oil and the fusible link was destroyed to prevent the engine from seizing up. My life was put endanger as my car shut off at the red light intersection. I received no warning lamps or messages of symptoms prior to the failure. Failure 1st appeared July 17th, 2022 Summary NISSAN IS RECALLING CERTAIN MODEL YEAR 2011 INFINITI FX, MODEL YEAR 2012 INFINITI M, MODEL YEAR 2011-2012 NISSAN FRONTIER, MODEL YEAR 2011-2012 NISSAN XTERRA, MODEL YEAR 2011-2012 NISSAN PATHFINDER, AND MODEL YEAR 2012 NISSAN NV VEHICLES. SOME OF THE BOLTS THAT CONNECT THE ENGINE OIL COOLER AND THE ENGINE OIL FILTER TO THE ENGINE IN THESE VEHICLES MAY HAVE BEEN MANUFACTURED TO BELOW SPECIFICATION STRENGTH. AS A RESULT, THE BOLT MAY BREAK AT THE OIL FILTER ATTACHMENT POINT AND CAN CAUSE AN ENGINE OIL LEAK. Recall 11V592000 Consequence IF THERE IS AN ENGINE OIL LEAK, THE ENGINE OIL PRESSURE WOULD DROP AND THE ENGINE COULD SEIZE, INCREASING THE RISK OF A CRASH. Car
STEERING PROBLEM
- Date Of Incident: 2019-09-01
- VIN: JN1AY1AR1CM
- Components: STEERING
- Summary: TL* THE CONTACT OWNS A 2012 INFINITI M56. WHEN THE STEERING WHEEL WAS LOWERED TO BE ADJUSTED AT A CERTAIN DEGREE, IT SEIZED OR BECAME DIFFICULT TO MANEUVER. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS CONTACTED AND STATED THAT THERE WAS NO RECALL FOR THE FAILURE. THE DEALER WAS NOT CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 64,000.
UNKNOWN OR OTHER,ENGINE PROBLEM
- Date Of Incident: 2014-10-28
- VIN: JN1AY1AR2CM
- Components: UNKNOWN OR OTHER,ENGINE
- Summary: I WAS AT A COMPLETE STOP AT A INTERSECTION IN MY 2012 INFINITI M56X. UPON ACCELERATION THE CAR STARTED TO HESITATE AND JERK FORWARD (THE CHECK ENGINE LIGHT CAME ON) AS I WAS PUSHING ON THE GAS PEDAL. THE CAR BARELY CREPT THROUGH THE INTERSECTION AND I MADE IT TO A PARKING LOT. I PUT THE CAR IN PARK AND PUSHED ON THE ACCELERATOR THE ENGINE WAS LOOSING POWER AND SKIPPING REAL BAD. I HAD TO HAVE THE CAR TOWED TO THE DEALER BECAUSE IT WAS NOT DRIVABLE. THE DEALER SAID THAT THE CAM SENSORS WERE BAD. THE SENSORS WERE ALL REPLACED BUT THE PROBLEM CONTINUED. AFTER 4 MONTHS IN THE SHOP TRYING TO FIGURE OUT THE PROBLEM AND REPLACING NUMEROUS OF PARTS THE PROBLEM SEEMED TO HAVE GOTTEN BETTER HOWEVER, NOW AFTER THE REPAIRS THE CAR NOW HESITATES FROM A FULL STOP AND JERKS FORWARD AFTER INITIAL ACCELERATION. THE ENGINE SEEMS TO LOOSE POWER SOMETIMES WHILE ACCELERATING WHILE DRIVING. *TR
SUSPENSION,WHEELS PROBLEM
- Date Of Incident: 2012-01-04
- VIN: JN1BY1AR8CM
- Components: SUSPENSION,WHEELS
- Summary: I WAS DISAPPOINTED WITH MY 2012 INFINITI M37X PURCHASED ON 1/3/2012 AT INFINITI. MY SAFETY WAS PUT AT RISK WITH THIS VEHICLE. I TOOK DELIVERY OF MY NEW M37X ON THE NIGHT OF 1/4/2012. UPON DELIVERY, I DROVE AT HIGHWAY SPEEDS(65 MPH). THE CAR WAS VIBRATING CONSTANTLY, AND I FELT THE VIBRATIONS PROMINENTLY THROUGH THE STEERING WHEEL. WITHIN TWELVE HOURS OF DELIVERY, I CONTACTED INFINITI ABOUT THE SAFETY ISSUES VIA EMAIL AND TELEPHONE. ON 1/5/2012, I BROUGHT THE VEHICLE TO THE SERVICE DEPARTMENT AT INFINITI. INFINITI DIAGNOSED THE VEHICLE AND DISCOVERED TWO DEFECTIVE TIRES/WHEELS. I FEEL THAT MY SAFETY HAS BEEN PLACED IN JEOPARDY WITH THIS INFINITI VEHICLE. MY MINIMUM EXPECTATION FROM INFINITI IS THE DELIVERY OF A SAFE VEHICLE. *TR
2012 Infiniti M56 recalls
The National Highway Traffic Safety Administration (NHTSA) has issued 3 recalls for different components of the 2012 Infiniti M56.
- Manufacturer: Nissan North America, Inc.
- Components: POWER TRAIN:DRIVELINE:DRIVESHAFT
- Summary: Nissan North America, Inc. (INFINITI) is recalling certain 2011-2013 M56, 2012-2013 M35 Hybrid, 2014-2018 Q50, Q70 Hybrid, 2014-2019 Q70, and 2015-2019 Q70L two-wheel drive vehicles. The driveshaft can fatigue and break.
- Consequence: A broken driveshaft can result in a loss of drive power, or a vehicle roll away when the vehicle is in park without the parking brake applied. Both scenarios can increase the risk of a crash.
- Remedy: Dealers will replace the driveshaft, free of charge. Owner notification letters were mailed August 13, 2024. Owners may contact INFINITI's customer service at 1-800-662-6200. INFINITI's numbers for this recall are R24A5 and R24A7.
- Manufacturer: Nissan North America, Inc.
- Components: POWER TRAIN:DRIVELINE:DRIVESHAFT
- Summary: Nissan North America, Inc. (Nissan) is recalling certain 2011-2013 Infiniti M56, 2012-2013 M35 Hybrid, and 2014 Q70 and Q70 Hybrid vehicles. These models, equipped with 2WD and with a hybrid or VK56 powertrain, have a driveshaft that may break.
- Consequence: A broken driveshaft can cause a loss of propulsion, increasing the risk of a crash, or may disable the parking brake, increasing the risk of a rollaway and injury.
- Remedy: Infiniti will notify owners, and dealers will replace the driveshaft, free of charge. The recall began February 5, 2021. Owners may contact Infiniti customer service at 1-800-662-6200.
- Manufacturer: Nissan North America, Inc.
- Components: FUEL SYSTEM, GASOLINE
- Summary: Nissan North America, Inc. (Nissan) is recalling certain model year 2012-2014 Nissan Juke, 2012-2013 Infiniti M56, QX56, and 2014-2015 Infiniti Q70 (V8 engine vehicles only), and QX80 vehicles. The fuel pressure sensors may not have been sufficiently tightened during production. As a result, the fuel pressure sensor may loosen with vehicle usage and cause a fuel leak.
- Consequence: A fuel leak in the presence of an ignition source could cause a vehicle fire.
- Remedy: Nissan will notify owners, and dealers will re-torque the fuel pressure sensors free of charge. The recall began on January 25, 2015. Owners may contact Nissan customer service at 1-800-647-7261.
Additional sources
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Other years of Infiniti M56
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