2019 Infiniti QX50 Engine Problems
Engine problems account for 88 of 139 total complaints (63%) filed on the 2019 Infiniti QX50, the highest share of any model year listed. NHTSA also lists a related engine control module recall (25V437000). Median mileage at failure was 69,500 miles.
- Engine complaints
- 88
- 63% of 139
- Crashes reported
- 1
- Fires reported
- 1
- Injuries reported
- 1
- Median mileage
- 69,500 mi
- Related recalls
- 1
Typical engine symptoms owners report
- Sudden loss of acceleration or power while driving, sometimes at highway speeds, with no dashboard warning light.
- Rough idling, stalling, or forward jumping at stop lights and low speeds.
- Engine makes unusual noises — humming, roaring, knocking, or lifter ticking — before losing power.
- Vehicle becomes unresponsive to the gas pedal, requiring the driver to pull over, shift to park, and restart the car before it responds again.
- Some owners report the engine failing entirely, requiring full engine replacement.
- One complaint describes smoke from under the hood after the engine lost power and made knocking noises.
When 2019 Infiniti QX50 engine complaints were filed
First complaint Oct 23, 2018, latest Sep 7, 2026.
Engine recalls for the 2019 Infiniti QX50
- NHTSA 25V437000Jun 27, 2025Engine443,899 vehicles
Engine and engine cooling:engine:hard parts internal/mechanical
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.
Risk: Engine failure increases the risk of a crash. A bearing failure may cause a breach in the engine block, allowing hot oil to be discharged, increasing the risk of an engine fire.
Remedy: Dealers will reprogram the engine control module (ECM) software, free of charge. Owner letters were mailed April 8, 2026. Owners may contact Nissan's customer service at 800-647-7261 or Infiniti's customer service at 1-800-662-6200. Nissan's numbers for this recall are R25A8/A9 and R25B1/B2.
Engine complaints by QX50 model year
Raw complaint counts per model year; newer years have had less time to accumulate complaints.
Frequently asked questions
- How common are engine problems in the 2019 Infiniti QX50?
- NHTSA lists 88 engine-related complaints out of 139 total complaints for the 2019 QX50, or 63% of all complaints filed for the year.
- Is there a recall for the 2019 Infiniti QX50 engine?
- Yes. Recall campaign 25V437000 covers the engine control module software on 2019-2022 Infiniti QX50 vehicles with the 2.0L variable compression turbo engine. Dealers reprogram the ECM free of charge.
- At what mileage do engine problems typically show up?
- NHTSA data shows a median mileage of 69,500 miles at the time of the engine-related failure.
- Did the engine problems cause any crashes or injuries?
- NHTSA records show 1 crash, 1 fire, and 1 injury among the engine-related complaints for the 2019 QX50.