2018 Infiniti Q50
Problems, Recalls & Reliability Report
Quick Summary
The 2018 Infiniti Q50 has 64 owner complaints filed with NHTSA — that's 1.1x the segment average of 57. The most common issue is engine problems (30% of all complaints), specifically: the car caught fire under the hood and completely burned up in the parking lot as i was exiting the vehicle updated 12/4/18*jb. There are 3 recalls issued for this model year. ⚠️ 1 fire report filed.
64
Total Complaints
3
Recalls Issued
—/5
Safety Stars
1.1x
vs Segment Avg
Known Problems(top 5 of 8)
ENGINE
19 complaints- • THE CAR CAUGHT FIRE UNDER THE HOOD AND COMPLETELY BURNED UP IN THE PARKING LOT AS I WAS EXITING THE VEHICLE UPDATED 12/4/18*JB
- • WHILE I WAS DRIVING MY INFINITI ON THE HIGHWAY MY SERPENTINE BELT SNAPPED 4 DIFFERENT TIMES WHILE IN MOTION. ALL WITHIN ONE YEAR. INCLUDING ME GETTING MY CAR BACK FROM THE DEALER AND THEM LETTING ME HAVE IT BACK THAT WAY. ALSO, THE TIRES ARE HORRENDOUS, FROM DAY ONE, THEY PULLED THE CAR LEFT OR RIGH
- • THE SERPENTINE BELT MAKES CONSISTENT NOISE IN ALL TYPES OF WEATHER. ALREADY HAD THE DEALER REPLACE IT ONCE. NOISE CAME BACK AND THE DEALER NOW SAYS IT COULD BE THE TENSIONER PULLEY.
“THE CAR CAUGHT FIRE UNDER THE HOOD AND COMPLETELY BURNED UP IN THE PARKING LOT AS I WAS EXITING THE VEHICLE UPDATED 12/4/18*JB”
— NHTSA complaint filing
When Problems Appear on the 2018 Infiniti Q50
Based on 26 owner complaints that included an odometer reading. Median mileage at time of complaint: 27K miles. Most complaints cluster in the 0-30K miles range.
ENGINE
Mileage figures are self-reported by owners in NHTSA complaint filings. Peak bucket = the mileage range with the most complaints for that component; it reflects when owners noticed and reported problems, not necessarily when the fault first occurred.
Recalls (3)
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."
Risk: The lack of an image in the back-up camera display increases the risk of a crash.
Fix: 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.
Fuel Cost Calculator for 2018 Infiniti Q50
Live EIA pricesBased on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.
5-Year Gas Price History
EIA weekly retail data · 2021 → todaySource: US Energy Information Administration weekly retail gasoline prices.
Estimated Insurance Cost for 2018 Infiniti Q50
How this estimate is calculated
Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.
Maintenance & Warranty
Infiniti New-Vehicle Warranty Coverage
These are the terms for a new Infiniti. If you're buying a used 2018 Q50, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Infiniti dealer for VIN-specific remaining warranty.
Estimated Repair Costs
Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.
🔍 Pre-Purchase Inspection Checklist
Based on 64 owner complaints for this specific year, here's what to check or ask about:
- ☐ENGINE: THE CAR CAUGHT FIRE UNDER THE HOOD AND COMPLETELY BURNED UP IN THE PARKING LOT AS I WAS EXITING THE VEHICLE UPDATED 12/4/18*JB
Typically appears around 50K miles. Repair cost ~$500
- ☐AIR BAGS: TL* THE CONTACT OWNS A 2018 INFINITI Q50. THE CONTACT STATED WHILE DRIVING 45 MPH, THE AIR BAG WARNING LIGHT ILLUMINATED AND AFTER WHICH THE VEHICLE STARTED TO HESITATE. THE VEHICLE HAS BEEN TAKEN TO LOCAL DEALER (LAKE NORMAN INFINITI LOCATED AT 20435 CHARTWELL CENTER DR, CORNELIUS, NC 28031) ON FIV
Typically appears around 50K miles. Repair cost ~$500
- ☐OTHER: FAULTY "DISPLAY CONTROL UNITS" CAUSE BLUETOOTH SYSTEM TO BEHAVE ERRATICALLY, PLAY / PAUSE MUSIC OR SOUNDS, OVERRIDE USER CONTROLS, AND CAUSE SEVERE DISTRACTIONS WHILE DRIVING BY HAVING TO MANUALLY TURN OFF BLUETOOTH FROM PHONE. FAULTY DCU WILL OVERRIDE USER CONTROLS IN OTHER ASPECTS AS WELL. DCU WIL
Typically appears around 50K miles. Repair cost ~$500
- ☐FUEL SYSTEM: GAS MILEAGE IS VERRY BAD ! IN CITY ONLY MY CAR GIVE ME 14 MPG AND HWY 18MPG INFINITI SAY IS. 20MPG CITY AND 29HWY. AND COMBINED 22MPG
Typically appears around 50K miles. Repair cost ~$500
- ☐RECALLS: Verify all 3 recalls have been completed — free at any Infiniti dealer
- ☐General: Get a pre-purchase inspection from an independent mechanic ($100-$200)
Infiniti Q50 — Year Comparison
How does 2018 compare to other years? Fewer complaints = more reliable.
NHTSA Safety Rating
No NHTSA safety rating available
At a Glance
- Complaints
- 64
- Recalls
- 3
- Fire reports
- 1
- Crash reports
- 1
- Injury reports
- 0
- Segment avg
- 57
Check a Specific VIN
See recalls for YOUR 2018 Infiniti Q50