2021 Infiniti Q50 Problems: 3 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 Q50 has 3 documented known issues, with 2 rated critical. The most serious are ECM Software Cuts Fuel After Rapid Acceleration Causing Stall (Recall 21V234000) ($0-$0 repair) and Improperly Heat-Treated Steering Knuckle and Rear Axle Housing (Recall 21V402000) ($0-$0 repair). DIY maintenance guides at au7o.io.
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All 3 Known Issues
NHTSA Recalls3 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:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
Nissan North America, Inc. (INFINITI) is recalling certain 2021 INFINITI Q50 and Q60 vehicles. After detecting rapid acceleration, the Engine Control Module (ECM) may incorrectly reduce engine power and reduce fuel supply to the engine.
BACK OVER PREVENTION:DISPLAY FUNCTION
Nissan North America, Inc. (Nissan) is recalling certain 2021 Infinity Q50, Q60, and QX80 vehicles. A software error may deactivate the audio/video control unit screen, preventing the rear-view image from displaying. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
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Frequently Asked Questions
What are the most common Infiniti Q50 problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Infiniti Q50 has 3 documented issues. Documented issues include: ECM Software Cuts Fuel After Rapid Acceleration Causing Stall (Recall 21V234000), Improperly Heat-Treated Steering Knuckle and Rear Axle Housing (Recall 21V402000), Rear-View Camera Image Fails to Display (Recall 21V599000). Of these, 2 are rated critical and should be addressed promptly.
Is the Infiniti Q50 reliable?
The 2021 Infiniti Q50 has 3 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: ECM Software Cuts Fuel After Rapid Acceleration Causing Stall (Recall 21V234000) and Improperly Heat-Treated Steering Knuckle and 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 Q50 problems?
Repair costs for known Infiniti Q50 issues range from $0 to $0, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, ECM Software Cuts Fuel After Rapid Acceleration Causing Stall (Recall 21V234000), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2021 Infiniti Q50 ECM Software Cuts Fuel After Rapid Acceleration Causing Stall (Recall 21V234000)?
On certain 2021 Q50 and Q60 models the Engine Control Module misreads a rapid acceleration event and responds by incorrectly reducing engine power and cutting fuel supply. The driver experiences an abrupt loss of power, and the fuel cut can be severe enough to stall the engine ou… Repairs typically run $0-$0. Severity: high.
What is the 2021 Infiniti Q50 Improperly Heat-Treated Steering Knuckle and Rear Axle Housing (Recall 21V402000)?
A batch of front steering knuckles and rear axle housings left the supplier without proper heat treatment, leaving them below the required strength. The weakened parts can deform on impact — a curb strike or pothole that a sound component would shrug off — resulting in loss of st… Repairs typically run $0-$0. Severity: high.
What is the 2021 Infiniti Q50 Rear-View Camera Image Fails to Display (Recall 21V599000)?
A supplier error in the In-Vehicle Connectivity software inside the telematics control unit (TCU) cuts accessory power to the audio/video control unit when privacy mode is switched on. If privacy mode is enabled and the car then is not started for 14 days, the rear-view monitor,… Repairs typically run $0-$0. 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.