2021 Infiniti QX50 engine problems
17 owner complaints filed with NHTSA name the engine on the 2021 Infiniti QX50 — 44% of all complaints for this model year.
What owners report
“On June 16, 2026, a 2021 Infiniti QX50 experienced a safety-related malfunction while being driven at approximately 15–20 mph. The vehicle suddenly jerked, lost power response, displayed multiple warning lights, showed a “System Fault – See Owner’s Manual” message, and became unresponsive/difficult…”
filed Jun 29, 2026
“There is an active and unremedied safety recall on my 2021 Infiniti QX50 (NHTSA Recall #25V-437) for a critical engine defect that can result in complete engine failure and risk of fire. The recall was issued on June 26, 2025. I am an active-duty military member stationed in Germany. I shipped my…”
filed Jun 23, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Engine bearings may have manufacturing defects that can lead to engine failureCampaign 25V437000 · Jun 27, 2025
Engine problems in other QX50 years
| Year | Reports | Share |
|---|---|---|
| 2020 QX50 | 15 | 50% |
| 2019 QX50 | 49 | 36% |
| 2016 QX50 | 5 | 26% |
Other reported problem areas on the 2021 Infiniti QX50
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.