2021 Infiniti QX50 engine problems
18 owner complaints filed with NHTSA name the engine on the 2021 Infiniti QX50 — 45% of all complaints for this model year.
What owners report
“My 2021 Infiniti QX50 has suffered a catastrophic internal engine failure. This vehicle is explicitly covered under active federal safety recall NHTSA Campaign 25V437000 (Infiniti Campaign R25A8/A9 / R25B1/B2) for defective, failing main and link bearings. The Infiniti dealership is actively…”
filed Aug 31, 2026
“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
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 | 17 | 53% |
| 2019 QX50 | 53 | 38% |
| 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.