Problems · by component

2019 Infiniti QX50 engine and engine cooling problems

32 owner complaints to NHTSA about the 2019 Infiniti QX50 cite engine and engine cooling, 22% of all 145 complaints for this model year. NHTSA also lists 1 recall on this component.

Complaints
32
22% of all complaints
Crashes
0
Reported by owners
Fires
0
Reported by owners
Injuries
0
Reported by owners
01 —Owner reports

What owners say about the engine and engine cooling

Verbatim from NHTSA complaints, newest first
“The contact owns a 2019 Infiniti QX50. The contact stated that while driving 70 MPH, the vehicle stalled; however, the contact was able to pull off the highway safely to a safe place. There was an abnormal burning odor coming from the vehicle. The oil pressure warning light was illuminated. The vehicle was towed to an independent mechanic and was diagnosed with a seized engine. The vehicle was later towed to dealer to see if the failure was associated with NHTSA Campaign Number: 25V437000 (Engine and Engine Cooling). However, the contact was notified that failure was caused by sludge in engine and could not qualify under the recall. The contact stated that the vehicle had exhibited the failure described in the recall, but the manufacturer and dealer refused to repair the vehicle without charge. The manufacturer was contacted by phone and made aware of the failure. The failure mileage was approximately 94,000.”
Owner complaint to NHTSAFiled Sep 25, 2026Engine and engine coolingODI 11766956
“The contact owns a 2019 Infiniti QX50. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that the vehicle was shaking erratically. In addition, the oil light and check engine warning lights were illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The dealer was made aware of the failure. In addition, the vehicle was inspected on 07/01/2026 by the dealer under NHTSA Campaign Number: 25V437000 (Engine and Engine Cooling). The contact was informed that the vehicle had passed the inspection. The manufacturer was not made aware of the failure, and a case was filed. The contact was informed that the mileage on the vehicle was over the mileage limitation. The failure mileage was approximately 200,000.”
Owner complaint to NHTSAFiled Jul 28, 2026Engine and engine coolingODI 11753348
“The contact owns a 2019 Infiniti QX50. The contact stated that while driving at an undisclosed speed, there was an abnormally loud sound coming from the vehicle. There was no warning light illuminated. The contact received notification of NHTSA Campaign Number: 25V437000 (Engine and Engine Cooling). The vehicle was taken to the dealer, where it was diagnosed with engine failure due to metal shavings found in the oil pan. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact was denied an engine replacement. The dealer informed the contact that the claim was denied due to the vehicle exceeding the warranty mileage and a lack of proper maintenance. The contact provided maintenance records; however, the claim was still denied. The dealer stated that the failure was related to insufficient maintenance and not the recall. The manufacturer was made aware of the failure, and a case was opened. The failure mileage was approximately 135,000.”
Owner complaint to NHTSAFiled Apr 28, 2026Engine and engine coolingODI 11734404
“The contact owns a 2019 Infiniti QX50. The contact received notification of NHTSA Campaign Number: 25V437000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact later received an extended warranty notification from the manufacturer stating that the extended warranty on the engine for 10 years/120,000 miles. However, the contact received a second recall notification to contact the dealer for the recall repair. The contact stated that while driving 70 MPH on an Interstate, the vehicle suddenly decelerated to 35 MPH, almost causing a crash. There was no warning light illuminated. The contact was able to pull over to the side of the road, and the contact turned off the vehicle. The vehicle was restarted after 15 minutes and driven to the residence. The dealer was contacted and confirmed that the recall had resumed, and a recall repair appointment was scheduled. The vehicle was towed to the dealer, where the contact was verbally informed that no metal shavings were found in the oil pan upon inspection, and the engine was not replaced; however, the recall completion report that the dealer had provided to the…”
Owner complaint to NHTSAFiled Mar 12, 2026Engine and engine coolingODI 11723850
“The contact owns a 2019 Infiniti QX50. While driving at an undisclosed speed, there was an abnormal sound coming from the engine compartment. There was no warning light illuminated. The vehicle was taken to the dealer; however, the contact was informed that parts were not yet available. The contact was advised to call back to schedule an appointment for a later date. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The contact received notification of NHTSA Campaign Number: 25V437000 (Engine and Engine Cooling). The manufacturer was not made aware of the failure. The failure mileage was approximately 69,000.”
Owner complaint to NHTSAFiled Mar 5, 2026Engine and engine coolingODI 11722217
“The contact owns a 2019 Infiniti QX50. The contact stated that while driving at an undisclosed speed, several warning lights illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The dealer was made aware of the failure, and the contact was informed that the parts were not available to repair the vehicle. In addition, the contact was informed that a diagnostic test was needed to determine the cause of the failure. The contact stated that the vehicle was dangerous to drive. The contact received notification of NHTSA Campaign Number: 25V437000 (Engine and Engine Cooling); however, parts to do the recall repair were not available. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was unknown.”
Owner complaint to NHTSAFiled Jan 22, 2026Engine and engine coolingODI 11712696

Showing 6 of 32 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 7, 2026NHTSA vehicle page
02 —Related recalls

1 recall on this component

Engine and engine cooling: hard parts internal

Free remedy

Nissan North America, Inc. (Nissan) is recalling certain 2021-2024 Rogue, 2019-2020 Altima, 2019-2022 Infiniti QX50, and 2022 Infiniti QX55 vehicles equipped with 3-cylinder 1.5L or 4-cylinder 2.0L variable compression turbo (VC-Turbo) engines. The engine bearings may have manufacturing defects that can lead to engine failure.

Engine and engine coolingReported Jun 27, 2025NHTSA 25V437000
Data from NHTSA Recalls API · synced Nov 7, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Other 2019 QX50 problem areas