2019 Infiniti QX50 engine problems
85 of the 140 complaints owners filed with NHTSA about the 2019 Infiniti QX50 name the engine (NHTSA’s “Engine” heading — the engine and its cooling system). Filed under the same heading: 23 manufacturer bulletins, 1 recall, 1 NHTSA investigation. Every figure below is a document in a federal file, linked; none is a failure rate, and none is a verdict on any one car.
What owners filed about the engine
Source: NHTSA complaint database1 of the 85 reports a crash · 1 a fire · 1 injury. Self-reported, unverified.
Filed per year: 2018: 1 · 2019: 1 · 2020: 2 · 2023: 1 · 2024: 5 · 2025: 50 · 2026: 25
Half of the 28 owners who gave an odometer reading reported the engine problem between 55,000 and 106,000 miles. A median of reports, not the life of a part.
140 complaints in all about the 2019 Infiniti QX50, 25 filed in 2026. The whole picture, every system →
Counts are owner reports to NHTSA, not verified defects, and scale with how many of these were sold; nothing here is a rate. NHTSA groups complaints coarsely, so “Engine” means the same area of the vehicle, not one fault.
Across model years: Infiniti QX50 engine problems, every year on file →
In owners’ own words
Source: NHTSA complaint databaseFiled with NHTSA by the people who own these cars, about the engine. Quoted as written, with anything identifying removed; unverified reports — what was said, not a finding that it was true.
On January 1, 2025 at about 10:30pm, while driving at about 40 miles per hour the engine made some knocking noises and then suddenly lost power, forcing the car to be pulled over to the side of a dangerous road. When I opened the hood of the car there was a small amount of smoke.
The engine stopped working. Allowing me to go no faster than 15 miles an hour. The safety issue is you can no longer drive at the speed that you need to drive. especially if you’re on the highway. The problem has been addressed by a dealer. I needed a whole new engine $13,000. The car at 97,000 miles on it. Was well taken care of.
While driving I heard a roaring noise from my engine and my car’s A/C stopped cooling. I have no warning messages from car regarding the engine. The noise only stops once the car is fully powered off. I recorded a video of the noise and alert panel that shows no warnings/issues. Will be contacting my local service department
About five months ago, while driving on the highway, the care would say it's in Drive, but sounded like it couldn't get out of 1st gear and I'd get high RPMs. Thankfully there was stop-and-go traffic and I didn't have to exit pull off the highway or hit high speeds.
Engine acceleartion issue. Rpm goes high but car struggle to speed up.. At first it happened when car was at stop light, struggle to move forward.. took to Grubbs infiniti.. At first,dealer could not replicate the issue, but luckily I had taken the video of the issue I had.
What is on file about the engine
Source: NHTSA recalls, investigations and manufacturer communicationsRecall filed under this heading
- 25V437000 CriticalJun 27, 2025 · 443,899 vehicles
- 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.
NHTSA investigation
- PE23023 Complete loss of motive power due to engine failureopened Dec 13, 2023 · closed Jul 18, 2025
- On December 13, 2023, the Office of Defects Investigation (ODI) opened PE23-023 to investigate allegations of engine failures leading to loss of motive power in model year (MY) 2021-2023 Nissan Rogue; MY 2019-2021 Nissan Altima; and MY 2019-2021 Infiniti QX50 vehicles. At that time, ODI had received 6 Vehicle Owner Questionnaires (VOQ) and multiple early warning reports, with consumers reporting e…
23 manufacturer bulletins filed under this heading
The 0 newest are listed; every one is on the model year’s page. Quote the document number at a service desk — it is a diagnosis the maker has already written down.
Trouble codes named on this system
P0456 P0442 P0455 P0448 P0603 P062F P11A7
Codes a bulletin or an owner’s complaint about the 2019 Infiniti QX50 names on this model year; a code with a record of its own links it.
Common questions
Source: NHTSA complaint database, recalls and manufacturer communicationsAre engine problems common on the 2019 Infiniti QX50?
They are documented: NHTSA holds 85 owner complaints naming the engine on this model year (61% of everything owners filed about it), and 23 manufacturer bulletins, 1 recall, 1 NHTSA investigation are filed under the same heading. Whether it is a problem on one particular car is a diagnosis, not a count, and a count says nothing about how many were sold.
Is there a recall for the engine on the 2019 Infiniti QX50?
Yes — one campaign is filed under this heading: 25V437000. A recall is matched by VIN; check yours at nhtsa.gov/recalls.
When do engine problems show up on the 2019 Infiniti QX50?
Owners who gave an odometer reading reported it at a median of 82,000 miles; half of them between 55,000 and 106,000. That is when reports cluster, not the life of a part.
What does NHTSA's "Engine" heading cover?
The engine and its cooling system. Owners choose the heading when they file, so it says which area of the vehicle the complaint is about, not which part failed.