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ProblemsByVin Index / 2012-INFINITI-QX56 / COMPLAINTS
Full complaint record · NHTSA

2012 INFINITI QX56 owner complaints

59 complaints filed with NHTSA on this vehicle . Showing the 300 most recent — grouped by category for scanning.

engine 6 complaints shown

21 total in this category · moderate · avg repair $3,100 · see engine cluster analysis →
12/02/2015 85,556 mi ODI #10808059.0

Vehicle dropped speed on the highway and started flashing the service engine soon light. The speed drop was severe and placed me in a dangerous situation on the highway. It also had a whining noise at start when I left . Took it to the dealer, they informed me the timing chain needed to be replaced. The vehicle only had 83k in miles and was just 10k out of warranty. Dealer charged $4000 for the repair

10/11/2019 70,000 mi ODI #11267989.0

Tl* the contact owns a 2012 Infiniti qx56. The contact stated that the vehicle lost power and failed to accelerate. In addition, there was a humming noise coming from the engine. There were no warning indicators illuminated. The vehicle was taken to west houston Infiniti (12200 katy fwy, houston, tx 77079, (281) 589-8900) where it was diagnosed that the brakes were wearing down. The contact stated that the dealer did not diagnose the humming noise. The vehicle was not repaired. In addition, the contact stated that the power steering pump was replaced by an independent mechanic. The humming noise recurred. The contact stated that the mechanic called the Infiniti dealer and was informed that it was due to the timing chain. The approximate failure mileage was 70,000.

09/27/2018 82,000 mi ODI #11131900.0

At 82,000 miles the check engine light came on indicating both catalytic converters were bad. They are warrantied to 80k miles and of course manufacturer would not help. This needs a recall, google qx56 catalytic converter and see how many people have had this issue.

08/05/2021 ODI #11427869.0

I own a 2012 QX56. Check engine light comes on and I take it to the dealer. It's the Catalyst System Efficiency Below Threshold (catalytic covers - P0430 code) I was warned before I bought this vehicle about the cats going bad. Infiniti dealer, that I purchased the truck from said "this vehicle has been serviced at an Infiniti dealer since day one. Every possible service that was needed was completed. The owner took immaculate car of this truck. You won't have any issues." So tell me, if this vehicle was driven exactly how it was supposed to be and yet at 113K miles the cats go bad, why isn't there a recall?? This is a "top of the line SUV" and yet it needs $4500.00+ in engine repairs at just over 113K miles. Infiniti needs to step up and take responsibility for this issue. If dealership

07/29/2019 ODI #11240421.0

I had my catalytic converter replaced back in december 2016 . There was a recall for catalytic converter so I had it replaced. Now the check engine light is back on so I got it checked out and was told that I needed to replace the catalytic converter again. 35k miles later

06/22/2018 107,752 mi ODI #11103396.0

I am experiencing the same issues that have been posted by several others on this site with the catalytic converter and the battery (jn8az2ne3c9****, jn8az2nf1c9****, and jn8az2nc9c9****). I took it to get checked out yesterday and just received a call from the technician. He stated that both catalytic converters have to be replaced and it will cost $5,200. If this is a common issue, why is Infiniti not recalling this as an issue? Instead it appears that they are making consumers pay for mechanical problems that they are clearly aware are manufacturing problems. I have also had to call my insurance company to tow my vehicle because the battery was being completely drained. It was towed to Infiniti after a few incidents but of course they could not tell me why I had to keep buying batt

other 4 complaints shown

12/22/2018 105,000 mi ODI #11163059.0

The fuel rail pressure center malfunction is not working. Car stalls when driving - check engine light is on

12/18/2019 90,400 mi ODI #11289989.0

The fuel gauge may be slow to register, fail to read full when the gas tank is actually full, or read inaccurately. When filling gas tank to full, after 30 miles the gauge is reading 2/3 of a tank or less while the miles to empty reading is still high.

11/04/2022 ODI #11492249.0

I have an engine light on as a result of 2 bad catalytic converters that need to be replaced. The vehicle has been inspected the infinite dealer maintenance dept. This poses a safety risk of this vehicle shutting down in the midst of driving

08/14/2018 ODI #11119825.0

There's a strong odor of gasoline once we park the vehicle. I did some searches online and noticed there was a recall for Nissan/infinit 2012 vehicles due to '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. A fuel leak in the presence of an ignition source could cause a vehicle fire.' this includes 2012 infinit qx56 which is the vehicle we have but when I search my vehicles VIN, your site tells me there is no recall. I believe more vehicles than originally thought might have this recall issue.

brakes 3 complaints shown

4 total in this category · moderate · avg repair $450 · see brakes cluster analysis →
11/30/2012 7,200 mi ODI #10486608.0

Tl* the contact owns a 2012 Infiniti qx56. The contact stated that while driving 60 MPH and slightly applying the brakes, the brakes seized, causing the vehicle to stop instantly. The contact stated that once the vehicle came to a complete stop, the brakes released and the vehicle functioned properly. The vehicle was taken to a dealer for inspection but they were not able to diagnose the failure. The vehicle was not repaired. The manufacturer was not notified. The failure mileage was 7,200.

10/27/2011 ODI #10433059.0

The standard qx56 comes with more than adequate room for any size shoe on the accelerator pedal. Less than 10% of the qx models are ordered with the technology package. This package includes a design feature that causes the gas pedal to push back against the operators foot if the radar senses that the vehicle is closing distance too quickly on the vehicle ahead. The mechanical/electrical device that performs this action is mounted to the firewall at the top of the accelerator pedal. I am 6'3" tall and have a size 12 shoe. The tip of my shoe keeps getting caught under this mechanical device and on multiple occasions in the first week of ownership it has caused a momentary delay in quickly moving from the accelerator to the brake pedal. The hang up of the tip of my shoe is exaggerated g

09/28/2015 42,000 mi ODI #10778289.0

When I'm stopped at a light the vehicle will start to roll forward unexpectedly and extra pressure needs to be applied to the brake pedal to prevent the vehicle from moving, at this point the brake pedal is almost at the floor and pumping the pedal a few times will restore the brakes to a normal feel. The Infiniti dealer states this is a normal condition and repairs are not needed. This has been ongoing since 04/2015 to present.

electrical 3 complaints shown

9 total in this category · moderate · avg repair $850 · see electrical cluster analysis →
11/19/2015 48,000 mi ODI #10794965.0

Tl* the contact owns a 2012 Infiniti qx56. While driving approximately 65 MPH, the vehicle stalled without warning. The vehicle was restarted after several attempts. The vehicle was taken to the dealer, but was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 48,000.

11/08/2016 70,000 mi ODI #10924936.0

We have had problems with the battery since we bought the qx56. SUV's completely dies after a glove box light, radio has been played for 20 to 30 minutes, car cannot be jumped by typical cables, every time we either had to have a heavy duty jump done by tow company or battery was replaced by Infiniti. Timing chain and both catalytic converters need to be replaced, with engine issues. Infiniti had SUV for almost a month to fix engine and timing chain. Engine light still coming on then we where told the converters needed to be replaced. $5k to fix. It sounds like this is a very common issue with qx56 for this year and others. After each time engine light came on Infiniti service dept told us to continue driving the car and after 2 weeks if it didn't reset then call back again. We did

10/29/2017 107,506 mi ODI #11040876.0

Experiencing almost identical issues to another complaint I saw that was previously filed (#10924936). Told we need to replace catalytic converters at $2,000 each. Dealership said it's a known issue with the vehicles. If it's a known issue, perhaps something should be done about it. We've also had to have the battery replaced numerous times. Had to call aaa several times to jump the vehicle.

body 2 complaints shown

11/02/2020 ODI #11372775.0

The paint on my 2012 qx 56 Infiniti is peeling really bad. I've spoke with someone at the cooperate level and was told their was a recall on them. The dealership was suppose to repaint the whole vehicle, but I was never contacted. When I spoke to the associate & manger, I was told there wasn't anything they could do.

09/14/2020 ODI #11354911.0

The paint is peeling off the top of the roof on the passenger side by the roof racks, in front by the windshield there is a spot that is larger than a half dollar and on the driver side rear a spot about 6-8 inches in diameter.

suspension 1 complaint shown

4 total in this category · moderate · avg repair $900 · see suspension cluster analysis →
10/26/2018 60,000 mi ODI #11142909.0

My 2012 Infiniti qx56 with hbmc drives very twitchy and feels unsafe to drive. It hadles well on perfectly smooth roads but if there are any imperfections it tries to jump back and forth in the lane. I have had the wheels balanced and alignment performed at the local Nissan dealer but this has not helped the driving characteristics. If I am coming into a corner too fast the back end will skip about as if the rear alignment is out of whack. I am not sure if this has to do with the 22" wheels being too heavy or the drive by wire being calibrated to sensitive or if there is something wrong with the suspension the dealer is not spotting. I feel like I want to trade the car in after only 4 months and 8,000 miles of driving it.

airbags 1 complaint shown

5 total in this category · severe · avg repair $1,100 · see airbags cluster analysis →
08/03/2013 ODI #10533365.0

Air bags do not engage when my wife sits in front seat. She weighs 100 pounds but I would think air bag system should work for an adult of this size. *tr

Showing 300 of 59 total complaints. The full federal record is available at nhtsa.gov/vehicle/2012/INFINITI/QX56#complaints.
Source: National Highway Traffic Safety Administration (NHTSA) owner complaint database. Last synced 2026-06-14. Complaints are owner-submitted and unverified — the existence of a complaint is not proof of a defect, but a pattern of complaints around the same component is a signal worth weighing. Verify any specific filing at nhtsa.gov.
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