Skip to content
EnginePart report

2020 Infiniti QX50 Engine Problems

Complaints
18about this part
Share
55%of 33 total for the year
Median mileage
56,650miles
Trend
RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.

NHTSA recorded 18 complaints about the engine of the 2020 Infiniti QX50, 55% of the 33 complaints for this model year. Where a mileage was given, the median is 56,650 miles.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Fuel smell coming from the vehicle when parkied in the garage. Has been check out twice. 1 st time Infiniti could not find any issue, but told me they were looking into it under engineering review. 2 months later after living with the smell brought it back they had a Infiniti engineer look at it. Now they are telling me they acknowlegde that there is a issue with the crank case ventalation system. Still no fix waiting on engineering review to come out with new bulletin could take up to 3 month. The smell of gas in my garage is a health hazard to humans. …”

NHTSA complaint #11399845, filed 2021-03, 5,300 miles

“About 3 months ago I took my car to be inspected for recall Infinity Dealership stated the drained oil and dropped oil pan and inspected for debris on bottom on oil pan however manufacturer has stated engine beating failure happens progressively not all of a sudden I believe the system malfunctioning light I’ve been seeing on my dash is a direct result of something that was missed during recall inspection.”

NHTSA complaint #11701610, filed 2025-11

“I received notification from Infiniti there was a recall for engines failing in the model I drive. I promptly took my vehicle to the dealership, and they confirmed there is metal shavings engine and Infiniti refused to replace the engine. An independent review was done by Infiniti and even though the dealership agrees engine needs replaced Infiniti refused. I am attaching invoice and pictures attached of oil pan confirming metal shavings are present.”

NHTSA complaint #11710207, filed 2026-01

“Recieve 5 recall notice but dealer will not look into the recall. Dealer is Infiniti of fife in tacoma washington. My concern is that the vehicle breakdown and they said it's normal wear and tear how can I prove that.”

NHTSA complaint #11715564, filed 2026-02

“I am submitting a formal safety complaint regarding Recall R25B2 on my 2020 Infiniti QX50. I purchased the vehicle in July 2024 from a dealership in Indiana and currently reside in Illinois. Summary of the Issue In July 2025, I received notice that my VIN was included in Recall R25B2 for an engine-related defect. Infiniti of Orland Park (IL) inspected the vehicle and confirmed that it exhibited symptoms consistent with the recall. My recall/warranty repair was denied because Infiniti claims the engine is “branded” in its internal system. …”

NHTSA complaint #11699837, filed 2025-11

Related service bulletins

Engine: other model years

YearComplaintsShare of year
2024120%
2022318%
20211844%
20201855%
20195739%
201718%
2016526%

Other parts of the 2020 Infiniti QX50

Forward collision avoidance
7 complaints
Electrical system
4 complaints
Engine cooling
4 complaints
Transmission and drivetrain
4 complaints
Other or unknown
3 complaints
Brakes
2 complaints
Back-over prevention (rear camera)
1 complaints
Fuel system
1 complaints
Lane departure
1 complaints
Vehicle speed control
1 complaints

← All problems reported for the 2020 Infiniti QX50

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology