NHTSA Owner Complaint Log
This page lists owner-reported complaints filed with NHTSA for the 2025 Infiniti QX50. Complaints are unverified consumer reports submitted to NHTSA and do not by themselves prove a defect or defect rate.
Vehicle purchased from dealer 3/5/25 (brand new). Noticed struggle to start/shaking vehicle/weak power, within first week. Malfunction indicator light came on 4/15/25, brought into dealership for testing. Data showed fail/pass misfires upwards of 30 times. Diagnosed as fuel injector pump misfire. Part was replaced and picked up the vehicle 5/8/25. Vehicle misfired again on 5/9/25. Brought into dealership for further testing; service advisor stated that the misfire was "likely due to air in the new pump." Noticeable misfire again on 5/27/25, no malfunction indicator light came on, notified service advisor. 5/30/25 vehicle misfired significantly, malfunction indicator light came on again, brought in for service. 6/11/25 service advisor stated they are doing a "pin fit repair" to refit all the connector pins for the ignition coils. I don't feel safe in this car. It's brand new, and should perform as such. When it misfires, I can barely drive past 30mph. It shakes violently, and I don't know whether it is safe to be driving it. Dealership doesn't seem to understand what the actual problem is.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.