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Other or unknownPart report

2018 Infiniti Q50 Other or unknown Problems

Complaints
6about this part
Share
14%of 44 total for the year
Median mileage
—not reported
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 6 complaints about the other or unknown of the 2018 Infiniti Q50, 14% of the 44 complaints for this model year.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

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

“I was driving down the highway leaving the barbershop and my car wouldnt go over more than like 55 mph and I got a flashing green symbol beside my check engine light which had just came on when the AUTO (Stop/Start) light did. once I got home turned it off and turned it back on the for a second the light doesn’t come on but once you drive it maybe a quarter of a mile or less it come back on and the car wont function properly again”

NHTSA complaint #11663542, filed 2025-05

“I was in my car waiting my for complex security gate to open when I heard a loud noise. I got out of my car to see what it was and turns out my sunroof exploded. For no reason. No rock or item hit my car nor was the car in motion. It was also not from the heat as it was 60 degrees outside. I called my warranty and they refuse to cover it because it is glass. I am reading many others with this same issue. How does a 6 year old car have the sunroof explode??”

NHTSA complaint #11573206, filed 2024-02

“I went to Evo Motors to find a car and found a car filled out an application and had to return to the next day because they were closing There was already talk about a down payment but no credit transaction was happening yet. I didn’t even have an offer on the credit yet so I came back the following day and on the way there I got a phone call that the bank was requesting a down payment in the amount of $4500. The salesperson was requesting cash downpayment and I thought that was strange since that was a lot of cash to have on hand. …”

NHTSA complaint #11541649, filed 2023-08

“The locks on the car automatically keep locking all day long and drain my battery, I have had to have my car jump started and recently towed to Infiniti dealer and they are stating there have been known issues with this electrical problem with rain getting into the sunroof and deteriorating the lines that short out the other systems. I have a bumper to bumper warranty that I took out with the Infiniti Dealership but they are stating only part of the repairs will be covered by the warranty and not the sunroof part and that will cost me $1,300 to fix. …”

NHTSA complaint #11621012, filed 2024-10

“The serpentine belt on my 2018 Infiniti Q50 Sport became contaminated with oil immediately after dealer turbo replacement at the end of August 2025, causing the belt to slip, shred, and be pulled into the engine. This resulted in sudden loss of essential engine functions and poses a significant safety hazard. This failure was caused by improper repair at the dealership.””

NHTSA complaint #11701863, filed 2025-11

Related service bulletins

Other or unknown: other model years

YearComplaintsShare of year
2023113%
2019620%
2018614%
2017813%
201625%
20151814%
2014169%

Other parts of the 2018 Infiniti Q50

Engine
17 complaints
Air bags
9 complaints
Electrical system
6 complaints
Fuel system
6 complaints
Back-over prevention (rear camera)
3 complaints
Brakes
3 complaints
Transmission and drivetrain
3 complaints
Wheels
3 complaints
Engine cooling
2 complaints
Vehicle speed control
2 complaints
Electronic stability control
1 complaints
Exterior lighting
1 complaints

← All problems reported for the 2018 Infiniti Q50

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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