Most common 2015 Infiniti QX80 problems
Share of the 18 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Infiniti QX80 complaints by model year
Best QX80 years: 2020, 2018, 2021. Years to avoid: 2019. Compare all years →
2015 Infiniti QX80 recalls (2)
Equipment › Other › Labels
Nissan North America, Inc. (Nissan) is recalling certain 2020-2026 Nissan Armada, 2011-2013 Infiniti QX56, and 2014-2027 QX80 vehicles equipped with 22" wheels. The Gross Axle Weight Rating (GAWR) listed on the certification label is incorrect, which can allow the vehicle to be overloaded.
Remedy: Dealers will install new labels, free of charge. Additionally, Nissan will mail replacement labels to owners. Interim letters notifying owners of the safety risk were mailed September 2, 2026.
Fuel system, gasoline
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.
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.
What 2015 Infiniti QX80 owners say
Fuel & propulsion system
The contact owns a 2015 Infiniti QX80. The contact stated while the vehicle was parked at the residence, he attempted to start the vehicle and the vehicle failed to start. There were no warning lights illuminated. The contact waited for a while before attempting to restart the vehicle. The vehicle was towed to an independent mechanic and was diagnosed with a defective fuel pump. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 95,000.
The most glaring safety issue caused by below is the SUV will try to move forward on its own while stopped and the brakes pressed that can potentially cause a fender bender. Infiniti/Nissan 5.6L engines have a history of failed or failing viscous cooling fan clutches. This goes back over a decade based on the TSG released by NISMO. When the viscous fan begins to fail, the most glaring symptom is that ECM will compensate by revving up the engine RPM...specially with the AC on. This can cause the RPM to go from around 500 to 1000 RPM during an RPM surge. The surge is enough to move the SUV forward at a stop unless the brake is firmly pressed. On hot weather days, this risk is frequent and significant at a top. This viscous fan issue also puts signficant load on the engine and causes significant power loss to the drive train. …
Engine & cooling
The contact owns a 2015 Infiniti QX80. The contact stated that on several occasions while driving approximately 20-25 MPH, the vehicle lost power, the engine revved abnormally, and the transmission failed to shift as intended. There were no warning lights illuminated. The vehicle was taken to a dealer; however, the cause of the failure was not duplicated. The manufacturer was not notified of the failure. The failure mileage was approximately 85,000.
The most glaring safety issue caused by below is the SUV will try to move forward on its own while stopped and the brakes pressed that can potentially cause a fender bender. Infiniti/Nissan 5.6L engines have a history of failed or failing viscous cooling fan clutches. This goes back over a decade based on the TSG released by NISMO. When the viscous fan begins to fail, the most glaring symptom is that ECM will compensate by revving up the engine RPM...specially with the AC on. This can cause the RPM to go from around 500 to 1000 RPM during an RPM surge. The surge is enough to move the SUV forward at a stop unless the brake is firmly pressed. On hot weather days, this risk is frequent and significant at a top. This viscous fan issue also puts signficant load on the engine and causes significant power loss to the drive train. …
Brakes
I was driving down back street and applied brakes due to a stop sign ahead of me and my vehicle did not stop. I was in total shock at the time of the accident and could not believe I rear ended another vehicle. The date of the accident was 2/9/2018. After speaking with two of my other friends weeks later. My friend that owner a Nissan murano rear ended another car when she applied the brakes. My other friend who owns an infinity had her vehicle in the shop for braking problems. To me this seems a little ironic if you ask me.
I was a passenger in my Infiniti QX80 going about 25 +/- . There were 3 beeps and the car suddenly breaked on its own in the middle of the street. I looked up to find nothing in front of us. The driver said the car breaked suddenly on its own! Her foot was on the gas peddle and when she reacted by going for the break it was already to the floor. There was absolutely no reason for this emergency collision feature to go off. Luckily there was no one close enough behind us to rearend us, although I'm certain the driver wondered why we slammed on our breaks in the middle of the street. Thankfully we had already got off of i80 where our speeds ranged up to 70 MPH. The dealership currently has the car and claims they can not find any issues, I'm fearful of getting behind the wheel and taking any chances of it happening again. …
2015 Infiniti QX80 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 5.6L 8-cyl | 7-speed automatic | RWD | 14 / 20 / 16 |
| 5.6L 8-cyl | 7-speed automatic | 4WD | 14 / 20 / 16 |
EPA ratings. Class: SUV.
Frequently asked questions
Is the 2015 Infiniti QX80 a good car?
Based on 18 owner complaints filed with NHTSA, the 2015 QX80 rates average: about as many complaints as a typical year of the QX80 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2015 Infiniti QX80?
The fuel & propulsion system — 8 complaints, 44% of all complaints for this model year, most often about delivery › fuel pump. Next are the engine & cooling (5) and brakes (4).
How many recalls does the 2015 Infiniti QX80 have?
There are 2 recalls for the 2015 Infiniti QX80, the most recent from July 15, 2026 (labels). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Infiniti QX80?
The best years by complaints, compared at the same age, are 2020, 2018 and 2021. Years to avoid or approach with caution: 2019. See the full Infiniti QX80 years comparison.
At what mileage do 2015 Infiniti QX80 problems happen?
The median mileage reported in complaints is about 51,000 miles; 44% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.