AutoUtility currently tracks 42 official NHTSA owner defect complaints for the 2018 Infiniti Q50. Engine & Cooling issues are the most frequently reported category, appearing in 15 complaints (35.7% of submitted records). Among these NHTSA complaint records, 1 filing cites a crash, 1 cites a fire.
- • Total NHTSA Complaints: 42 reports
- • #1 Reported Problem Area: Engine & Cooling (15 reports • 35.7% of submitted complaints)
- • Secondary Problem Areas: Air Bags & Restraints (8), Driver Assistance & Safety Tech (6)
- • Crash-Citing Complaints: 1 filings
- • Fire-Citing Complaints: 1 filings
- • Complaints Reporting Injuries / Fatalities: 0 injury filings • 0 fatality filings
Most Reported Problems for 2018 Infiniti Q50
Top automotive subsystem defect categories ranked by unique owner complaint volume in federal records
Engine & Cooling
Air Bags & Restraints
Driver Assistance & Safety Tech
NHTSA records list 1 official safety recall campaign for this model year involving the same broad component area:
- Campaign #19V654000 BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Fuel & Propulsion System
NHTSA records list 1 official safety recall campaign for this model year involving the same broad component area:
- Campaign #17V476000 FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Electrical System
Recent NHTSA Owner Reports for 2018 Infiniti Q50
Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation
"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..."
"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..."
"I am submitting this complaint regarding a safety defect in my 2018 Infiniti Q50, which was manufactured prior to May 1, 2018. Despite matching the make, model, and production timeframe associated with an existing Infiniti recall for backup camera failures, my specific vehicle is not included in..."
"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..."
"Filing this complaint regarding a safety-related defect involving the turbocharger system on my 2018 INFINITI Q50. The vehicle has approximately 46,000 miles and is 8 years old. INFINITI/Nissan has acknowledged through its own Technical Service Bulletins (TSBs) that turbocharger failure on..."
Complaint History for Infiniti Q50
Reported defect complaint volume across sibling model years (2015–2024)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2015 Infiniti Q50 | 125 | 16 | 3 | View 2015 Problems → |
| 2016 Infiniti Q50 | 39 | 1 | 4 | View 2016 Problems → |
| 2017 Infiniti Q50 | 62 | 3 | 4 | View 2017 Problems → |
| 2018 Infiniti Q50 Current Page | 42 | 1 | 3 | Current |
| 2019 Infiniti Q50 | 30 | 3 | 1 | View 2019 Problems → |
| 2020 Infiniti Q50 | 3 | 0 | 0 | View 2020 Problems → |
| 2021 Infiniti Q50 | 4 | 1 | 3 | View 2021 Problems → |
| 2022 Infiniti Q50 | 1 | 0 | 0 | View 2022 Problems → |
| 2023 Infiniti Q50 | 7 | 2 | 0 | View 2023 Problems → |
| 2024 Infiniti Q50 | 0 | 0 | 0 | View 2024 Problems → |
Detailed NHTSA Component Breakdown for 2018 Infiniti Q50
Complete distribution of consumer defect reports across all 24 granular NHTSA system and subsystem classifications
| Vehicle Component / System | Total Complaints | Crash Reports | Fire Reports | Reported Injury Entries | Reported Fatality Entries |
|---|---|---|---|---|---|
| Engine NHTSA category: ENGINE | 10 | 0 | 1 | 0 | 0 |
| Air Bags NHTSA category: AIR BAGS | 4 | 0 | 0 | 0 | 0 |
| Other / Uncategorized NHTSA category: UNKNOWN OR OTHER | 4 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,BACK OVER PREVENTION | 2 | 0 | 0 | 0 | 0 |
| Fuel & Propulsion System NHTSA category: FUEL/PROPULSION SYSTEM | 2 | 0 | 0 | 0 | 0 |
| Wheels & Hubs NHTSA category: WHEELS | 2 | 0 | 0 | 0 | 0 |
| AIR BAGS,ENGINE,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| AIR BAGS,SEAT BELTS | 1 | 0 | 0 | 0 | 0 |
| Back Over Prevention / Camera NHTSA category: BACK OVER PREVENTION | 1 | 0 | 0 | 0 | 0 |
| Electrical System NHTSA category: ELECTRICAL SYSTEM | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,AIR BAGS | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,AIR BAGS,SEATS | 1 | 0 | 0 | 0 | 0 |
| ELECTRONIC STABILITY CONTROL (ESC) | 1 | 0 | 0 | 0 | 0 |
| ENGINE AND ENGINE COOLING,ENGINE | 1 | 0 | 0 | 0 | 0 |
| EXTERIOR LIGHTING | 1 | 0 | 0 | 0 | 0 |
| Lane Departure Warning NHTSA category: LANE DEPARTURE | 1 | 0 | 0 | 0 | 0 |
| POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| POWER TRAIN,SERVICE BRAKES,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| SERVICE BRAKES, HYDRAULIC,ENGINE AND ENGINE COOLING | 1 | 0 | 0 | 0 | 0 |
| STEERING,POWER TRAIN,ENGINE | 1 | 0 | 0 | 0 | 0 |
| STRUCTURE,VEHICLE SPEED CONTROL,SERVICE BRAKES | 1 | 1 | 0 | 0 | 0 |
| UNKNOWN OR OTHER,ENGINE | 1 | 0 | 0 | 0 | 0 |
| VEHICLE SPEED CONTROL,ENGINE,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| WHEELS,ENGINE | 1 | 0 | 0 | 0 | 0 |
Official NHTSA Defect Investigations (1)
Formal safety defect inquiries and engineering analyses opened by the NHTSA Office of Defects Investigation (ODI)
Pedestrian alert sounds
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight ra...
The complaint records on this page are retrieved directly from the NHTSA Office of Defects Investigation (ODI) public database.
Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.