2018 Infiniti Q50: problems, recalls and reliability
3 recalls and 43 owner complaints on record; the weakest area is engine (32% of complaints).
Data updated weekly · 1 new complaint in the last 90 days · latest recall Jun 2024
All counts are reports filed with NHTSA in the United States - US market only, not worldwide totals.
Common problems
Computed from 43 owner complaints filed with NHTSA for this exact model year.
“The contact owns a 2018 Infiniti Q50. The contact stated that while driving at an undisclosed speed, the front passenger Occupant Classification System (OCS) sensor became inoperable. The vehicle was taken to the dealer, where it was diagnosed that the front passenger OCS sensor had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 59,200.”Owner report · Air Bags · Jun 2026
“The contact owns a 2018 Infiniti Q50. The contact stated while driving at an undisclosed speed, the air bag warning light illuminated. The vehicle was taken to the dealer, where the contact was informed that the front passenger seat and passenger seat belt needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 34,000.”Owner report · Seat Belts · May 2026
“Odometer Fraud. The contact purchased a 2018 Infiniti Q50. It was discovered that there were three separate mileage discrepancies. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 50,370; however, at the time of registration, it was discovered that the mileage had been rolled back from 54,000 to 28,630 miles. The mileage before the vehicle was purchased was 47,650.”Owner report · Electrical System · Jan 2026
Show 7 more owner reports
“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."”Owner report · Unknown Or Other · Nov 2025
“My car wouldnt start and when it did, it would start shaking and every time I accelerate, The speed wasnt going any faster but only the RPMs were”Owner report · Fuel/Propulsion System · Aug 2025
“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”Owner report · Unknown Or Other · May 2025
“The contact owns a 2018 Infiniti Q50. The contact stated that while driving at an undisclosed speed, the "Low Oil Pressure - STOP", message was displayed, and the contact stopped driving the vehicle. The contact stated that while starting the vehicle, the engine was abnormally loud. The contact stated that the low oil pressure warning light was illuminated. The vehicle was towed to an independent mechanic, who diagnosed a failure with the timing chain. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 107,000.”Owner report · Engine · Jan 2025
“Car has white smoke coming from the exhaust and the oil level keeps decreasing. Car stalls and takes time to accelerate P0106 code pops up from engine. There's a rattle and whine noise coming from the engine bay. Also the gas was stuck accelerating. Had to switch the car to neutral so it does continue accelerating. After switching to neutral I was able to decrease power to the wheels and had to pull over on the road.”Owner report · Power Train · Jan 2025
“The airbag/srs light is on. I've read on multiple forums that this is a common occurrence with this model and year of Infiniti. It did not come on as a result of any accident/incident.”Owner report · Air Bags · Jan 2025
“I was driving down the highway and my car started to shut down and started to make a knocking sound inside the engine bay, putting at risk other drivers, so i turned on my hazards and pulled to the shoulder of the road,the car wouldn't turn on so i called a tow truck. Took the car to dealer and stated engine is seized”Owner report · Power Train · Jun 2024
When filing, owners marked a crash in 1 of these complaints and injuries in 0 - self-reported to NHTSA, not verified accident statistics.
Recalls - 3 campaigns
Nissan North America, Inc. (Nissan) is recalling certain 2018-2019 Nissan Altima, Armada, Frontier, Kicks, Leaf, Maxima, Murano, NV, NV200, Pathfinder, Rogue, Rogue Sport, Sentra, Titan, Titan Diesel, Versa Note and Versa Sedan vehicles, as well as Infiniti Q50, Q60, QX30 and QX80 vehicles. Additionally included are 2019 Nissan GT-R and Taxi and Infiniti QX50, QX60, Q70, Q70L vehicles. The back-up camera and display settings can be adjusted such that the rear view image is no longer visible and the system will retain that setting the next time the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
Remedy: Nissan will notify owners in phases, having dealers update the back-up camera settings software, free of charge. The recall began November 11, 2019 and all affected VINs should be activated. Owners may contact Nissan customer service at 1-800-867-7669 or INFINITI customer service at 1-800-662-6200.
Nissan North America, Inc. (INFINITI) is recalling certain 2011-2013 M56, 2012-2013 M35 Hybrid, 2014-2018 Q50, Q70 Hybrid, 2014-2019 Q70, and 2015-2019 Q70L two-wheel drive vehicles. The driveshaft can fatigue and break.
Remedy: Dealers will replace the driveshaft, free of charge. Owner notification letters were mailed August 13, 2024. Owners may contact INFINITI's customer service at 1-800-662-6200. INFINITI's numbers for this recall are R24A5 and R24A7.
Nissan North America, Inc. (Nissan) is recalling certain 2016-2018 Infiniti Q50 and 2017 Infiniti Q60 vehicles equipped with a 2.0L engine. Incorrect Fuel Pump Control Module (FPCM) software may allow the fuel level in the main tank to be too low to supply fuel to the engine, causing the engine to stall while driving.
Remedy: Nissan will notify owners, and Infiniti dealers will reprogram the Fuel Pump Control Module (FPCM) with corrected software, free of charge. The recall began August 29, 2017. Owners may contact Infiniti customer service at 1-800-662-6200.
Trouble codes owners mention
OBD-II codes that appear in NHTSA complaints about this car.
Specifications
Factory options offered for the 2018 model year, decoded from the NHTSA vPIC database. Individual vehicles have one of each.
How other years compare
Check your exact Q50 by VIN
Recalls and equipment differ between individual vehicles. Decode your VIN to see what applies to yours.
Open VIN decoderFrequently asked questions
Is the 2018 Infiniti Q50 reliable?
NHTSA has 43 owner complaints and 3 recall campaigns on record for the 2018 Infiniti Q50. The most complained-about area is engine (32% of complaints).
At what mileage do 2018 Infiniti Q50 problems usually appear?
Half of the complaints that mention mileage were filed at 27,253 miles or less.
Does the 2018 Infiniti Q50 have open recalls?
3 recall campaigns have been issued, the latest concerning back over prevention: sensing system: camera. Check your specific vehicle by VIN - recall repairs are free at franchised dealers.
Source: NHTSA recall campaigns and owner complaints (public domain). Counts reflect reports on file and are not a defect rate.