2021 Infiniti Q50 Problems: 4 Known Issues
2021 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Infiniti Q50 has 4 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.
2021 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
No email neededHow interest is saved
Interest applies to the selected vehicle and configuration; it is not a reservation. Voting stores a first-party identifier for up to 180 days to prevent repeat votes. No account or email is needed. Clearing cookies or using another device may count separately. Privacy
Visual coming soon
Your interest helps us choose what to build next.
Visual Known Issues · Coming soon
$4.99/month plus taxes at launch · No payment today
All 4 Known Issues
Join 600+ people using Au7o to better understand their vehicles.
Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.
Other Infiniti Models
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 4 documented issues. The most frequently reported are: 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 4 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 $1,500, 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 software error in the audio/video control unit can deactivate the display screen, so no rear-view image appears when the car is shifted into reverse. The vehicle fails to comply with FMVSS 111, the federal rear visibility standard. Because the same control unit drives the cente… Repairs typically run $0-$0. Severity: medium.
What is the 2014-2026 Infiniti Q50 InTouch Infotainment System Lag and Freezing?
The dual-screen InTouch infotainment system suffers from significant lag, freezing, and occasional black screens. The system uses an outdated processor that struggles with modern navigation and connectivity demands. Repairs typically run $0-$1,500. 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.