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Light NHTSA footprint — 42 owner complaints and 3 active recall campaigns. Either a clean record or thin data; we'll show what's there.
The 2018 INFINITI Q50 has 42 NHTSA owner complaints and 3 recalls on file (U.S. federal records, as of September 2026). The most-reported system is engine at 11 complaints (~$3,100 to repair). Source: NHTSA Office of Defects Investigation.
| Model year | Owner complaints | Recalls |
|---|---|---|
| 2015 Q50 | 125 | 3 |
| 2016 Q50 | 39 | 4 |
| 2017 Q50 | 62 | 4 |
| 2018 Q50 (this page) | 42 | 3 |
| 2019 Q50 | 30 | 1 |
| 2020 Q50 | 3 | 0 |
| 2021 Q50 | 5 | 3 |
Solid reliability overall. Common issues are concentrated in a few systems.
Worth owning if you verify the specific issues below before you buy.
Our read of the federal NHTSA complaint and recall record for this exact year and model — not a substitute for a pre-purchase inspection. How we score.
Driver-assist features on the tested model: Electronic stability control: Standard · Forward collision warning: Optional · Lane departure warning: Optional
Source: NHTSA New Car Assessment Program — tested configuration: 2018 Infiniti Q50 4 DR AWD. Stars rate crash protection in NHTSA's tests, not overall reliability — see the owner-complaint data below for what actually goes wrong.
Here's what this model is known to do — so you can inspect for it, price it in, or make the seller fix it before you sign.
⚠ The one to take seriously: engine is flagged severe on this model . Inspect it closely on a test drive.
Run the VIN from the listing — 3 active recalls on this model. Recall repairs are always free.
Verdict for buyers: 7.6/10 model. The priciest documented failure is engine (~$3,100) — get the seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report tells you what this exact car has been through. Smart buyers get both.
See the full pre-purchase inspection checklist →A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in this vehicle's actual NHTSA record, not generic advice.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
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…
Run flat tires went flat on a pothole that was not even realized on a sunday with no service station open. Even if they were, the tire has to be replaced, cannot be repaired. There is no spare tire option- when contacted, company refused " not possible". This is not safe at all…
This was a rental vehicle, not my personal vehicle, but is applicable to multiple brands and models. The safety issue is due to the headlight modes. The default mode is off, yet the drl's remain on. These are bright enough that you can drive in the middle of the night and not…
The contact's son owns a 2018 Infiniti Q50. The contact stated that soon after purchasing the vehicle, there was an abnormal screeching sound coming from the brakes while depressing the brake pedal. There was no warning light illuminated. The contact's son took the vehicle to an…
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
A broken driveshaft can result in a loss of drive power, or a vehicle roll away when the vehicle is in park without the parking brake applied. Both scenarios can increase the risk of a crash.
The lack of an image in the back-up camera display increases the risk of a crash.
An engine stall can increase the risk of a crash.
Mostly yes. With a reliability score of 7.6 out of 10 based on 42 owner complaints filed with NHTSA, the 2018 Infiniti Q50 is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
The 2018 INFINITI Q50 is acceptable, with specific caveats. Worth owning if you verify the specific issues below before you buy. The record behind that call: Reliability score 7.6/10 — above the segment average; 3 recall campaigns on file. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
Inspect the engine first — it's the most-reported issue on this model, with 11 owner complaints filed. Average repair cost runs about $3,100 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
It scores 7.6 out of 10 on our NHTSA-based read of 42 owner complaints. The main thing to watch is engine. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
Based on NHTSA records, the most-reported issue is engine, with 11 complaints filed. Average repair cost runs about $3,100 at an independent shop.
The engine is one of the costlier repair items. Average repair cost runs about $3,100 at an independent shop. Catching early warning signs can sometimes extend life by 20–30,000 miles.
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 42 complaints on file and the costliest repair averaging $3,100, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.