There are 1 owner-reported engine complaints for the 2014 Infiniti Q50in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2014 Infiniti Q50. The contact stated that while driving at 45 MPH, the RPM inadvertently increased briefly before returning to normal. The check warning light was illuminated. The vehicle was taken to an independent mechanic, who determined a failure with the output speed sensor and transmission valve body. The vehicle was not repaired. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The approximate failure mileage was 90,000.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026