2021 Infiniti QX50 Problems: 4 Known Issues
2021 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated November 2026
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Infiniti QX50 has 4 documented known issues, with 1 rated critical. The most serious is Improperly Heat-Treated Front Steering Knuckle / Rear Axle Housing (Recall 21V402000). Across all issues with published estimates, repair costs range from $200 to $3,500. DIY maintenance guides at au7o.io.
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All 4 Known Issues
NHTSA Recalls6 recalls
SUSPENSION:REAR:AXLE:SPINDLE
Nissan North America, Inc. (Nissan) is recalling certain 2020 Nissan Murano, INFINITI QX60, 2021 Nissan GT-R, INFINITI QX50, and Q50 vehicles. The front steering knuckle or rear axle housing may have insufficient strength due to improper heat-treatment.
ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
Nissan North America, Inc. (Nissan) is recalling certain 2021-2024 Rogue, 2019-2020 Altima, 2019-2022 Infiniti QX50, and 2022 Infiniti QX55 vehicles equipped with 3-cylinder 1.5L or 4-cylinder 2.0L variable compression turbo (VC-Turbo) engines. The engine bearings may have manufacturing defects that can lead to engine failure.
LATCHES/LOCKS/LINKAGES:DOORS:LOCK
Nissan North America, Inc. (Nissan) is recalling certain 2023 INFINITI QX55 and 2022 INFINITI QX50 vehicles. The incorrect door latch may have been installed in the front right-side passenger door lock assembly, preventing the front right-side door lock from automatically locking.
TIRES
Nissan North America, Inc. (INFINITI) is recalling certain 2020 INFINITI QX50 vehicles. The text of the Tire and Loading Information placard, including the tire size and loading capacity, may be illegible. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims."
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Nissan North America, Inc. (Nissan) is recalling certain 2018-2019 Nissan Altima, Armada, Frontier, Kicks, Leaf, Maxima, Murano, NV, NV200, Pathfinder, Rogue, Rogue Sport, Sentra, Titan, Titan Diesel, Versa Note and Versa Sedan vehicles, as well as Infiniti Q50, Q60, QX30 and QX80 vehicles. Additionally included are 2019 Nissan GT-R and Taxi and Infiniti QX50, QX60, Q70, Q70L vehicles. The back-up camera and display settings can be adjusted such that the rear view image is no longer visible and the system will retain that setting the next time the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
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Frequently Asked Questions
What are the most common Infiniti QX50 problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Infiniti QX50 has 4 documented issues. Documented issues include: Improperly Heat-Treated Front Steering Knuckle / Rear Axle Housing (Recall 21V402000), Engine Cooling Fan Assembly Roaring Noise (Fan Stuck on High) and A/C Not Cooling - Fan and IPDM E/R Replacement (ITB22-025B), CVT Shudder or Judder When Pulling Away at Low Speed. Of these, 1 is rated critical and should be addressed promptly.
Is the Infiniti QX50 reliable?
The 2021 Infiniti QX50 has 4 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: Improperly Heat-Treated Front Steering Knuckle / Rear Axle Housing (Recall 21V402000). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Infiniti QX50 problems?
Repair costs for known Infiniti QX50 issues range from $200 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2021 Infiniti QX50 Improperly Heat-Treated Front Steering Knuckle / Rear Axle Housing (Recall 21V402000)?
Nissan recalled certain 2021 INFINITI QX50 vehicles because the front steering knuckle or the rear axle housing may not have received proper heat-treatment during manufacturing, leaving the part with insufficient strength. On a QX50 built with an affected part, an impact that a n… Severity: high.
What is the 2019-2022 Infiniti QX50 Engine Cooling Fan Assembly Roaring Noise (Fan Stuck on High) and A/C Not Cooling - Fan and IPDM E/R Replacement (ITB22-025B)?
Infiniti bulletin ITB22-025B covers 2019-2021 QX50 and 2022 QX50 and QX55 built on or before February 15, 2022 where a roaring noise comes from the engine cooling fan assembly because the fan runs on high and does not cycle, and the air conditioning is not cooling. The technician… Severity: medium.
What is the 2019-2022 Infiniti QX50 CVT Shudder or Judder When Pulling Away at Low Speed?
Some owners of the 2019-2022 QX50, which pairs the VC-Turbo engine with Nissan's XTRONIC CVT (built by Jatco), report a shudder or vibration when pulling away gently from a stop or driving at low speed. Hesitation and RPM swings can come with it. A 2022 class action named the 201… Repairs typically run $200-$3,500. Severity: medium.
What is the 2019-2021 Infiniti QX50 Fuel and Oil Vapor Odor When Parked in a Closed Garage from PCV Separator and Rocker Cover Design (TSB ITB21-020A)?
Infiniti bulletin ITB21-020A addresses a fuel or oil odor when a vehicle is parked in a closed garage despite no fuel, oil or EVAP leaks being found. It applies to 2019–2021 QX50 vehicles built before August 6, 2021. The prescribed repair changes the rocker-cover assembly and PCV… Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.