2018 Infiniti Q50: Problems & Reliability
CAUTION2018 Infiniti Q50: CAUTION — 42 owner complaints, rated on its recalls: 3 campaigns, 2 for fire or crash risk.
CarWhere's verdict score for the 2018 is 1.35, where 1.00 is a typical Q50 year once complaints are weighted for severity and spread over time on the road; caution starts at 1.25 and avoid at 1.60. 52% of its complaints are severe — a crash, fire, injury or a safety-critical system. Its raw count is below the median year, but it has been on the road only about 8 years, so complaints are arriving faster than for older Q50 years.
Sources: NHTSA owner complaints (ODI), recall campaigns and manufacturer service bulletins, CarWhere verified buyer prices · Model years 2014–2024 compared · Updated 2026-11-07 · By CarWhere Research · Methodology
42
NHTSA complaints
1.35
Verdict score (1.00 = typical Q50 year)
159
Service bulletins
3
Recall campaigns
2018 Infiniti Q50 recalls
3 recall campaigns on federal record for the 2018; the campaign list is on NHTSA's record for the 2018 Infiniti Q50.
2018 Infiniti Q50 service bulletins
The manufacturer has filed 159 technical service bulletins with NHTSA for the 2018 — close to the 129 of the median Q50 year from 2014 to 2024. Coded bulletins most often cover electrical system (67), engine & cooling (34), engine (6). Bulletins are repair instructions for dealer technicians, not recalls.
The 2018 vs. the year before and after
From the 2017 to the 2018, owner complaints fell 31% (61 → 42) — an improvement. The 2019 that followed fell 29% (42 → 30), so the 2019 has the lighter record so far.
| Model year | Verdict | Complaints | Bulletins | Recalls | Avg. buyer-paid |
|---|---|---|---|---|---|
| 2017 Q50 | AVOID | 61 | 194 | 4 | — |
| 2018 (this page) | CAUTION | 42 | 159 | 3 | — |
| 2019 Q50 | SOLID | 30 | 122 | 1 | — |
Prices are averages of CarWhere verified buyer transactions (shown when 3+ deals exist for the year). Full year-by-year table: Infiniti Q50 years to avoid.
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FAQ
Is the 2018 Infiniti Q50 reliable?
2018 Infiniti Q50: CAUTION — 42 owner complaints, rated on its recalls: 3 campaigns, 2 for fire or crash risk. CarWhere's verdict score for the 2018 is 1.35, where 1.00 is a typical Q50 year once complaints are weighted for severity and spread over time on the road; caution starts at 1.25 and avoid at 1.60.
What are the most common 2018 Infiniti Q50 problems?
The 2018 Infiniti Q50 has 42 NHTSA owner complaints and 159 manufacturer service bulletins on file; the component breakdown is on NHTSA's record for this model year.
How many recalls does the 2018 Infiniti Q50 have?
3 recall campaigns on federal record for the 2018 Infiniti Q50. Recall completion is VIN-specific, so check the exact car.
How do I check a specific 2018 Infiniti Q50 before buying?
Decode the VIN free at carwhere.com/tools/vin-decoder to confirm the build, then run the $9.99 CarWhere Full VIN Report for the exact VIN — recall, complaint, and service-bulletin record for this model year, the original window sticker where the manufacturer publishes one, and a market price check from verified buyers. One-time purchase, no subscription.
Sources & method
Complaint, recall and service-bulletin counts for the 2018 Infiniti Q50 come from NHTSA's Office of Defects Investigation; the verdict is CarWhere’s severity-weighted, time-on-road-adjusted score compared with the model’s own median year. The live complaint feed was unavailable at render, so the complaint count is the verdict engine’s stored count. Complaints are owner allegations, not verified defects. Full methodology.