2015 INFINITI Q40 problems
Light NHTSA footprint — 8 owner complaints. Either a clean record or thin data; we'll show what's there.
The 2015 INFINITI Q40 has 8 NHTSA owner complaints on file (U.S. federal records, as of July 2026). The most-reported system is airbags at 3 complaints, typically surfacing around 39,000 miles (~$1,100 to repair). Source: NHTSA Office of Defects Investigation.
Limited NHTSA data — only 8 complaints on file. The score reflects what's reported, but a small sample skews easily.
Only 8 NHTSA complaints on file — too few for a confident reliability call. Could be a clean record or just thin data.
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.
Top trouble spots 1 category with 3+ complaints
What owners are saying recent NHTSA-filed complaints · verbatim
Since I bought car the passenger "air bag off" light is always on whenever my wife, who weighs 165 lbs, is a passenger - she does not have airbag protection. We normally do not have a passenger in the front seat, and never even knew if that was an option until my wife just…
Since I bought car at 96 miles and now at 3000 miles the passenger "air bag off" light is always on whenever my wife, who weighs 105 to 109 lbs, is a passenger - she does not have airbag protection. I took car to the service department of two independent dealerships 4 months…
The contact owns a 2015 Infiniti Q40. The contact stated while parked, a water leak coming from the driver’s side floor was discovered. The contact also noticed that there was an abnormal odor coming from inside the vehicle that became more pronounced with the A/C unit…
The passenger airbag off light stays on while an adult weights more than 120 pound sitting on the passenger seat. The light won't go off while the car is moving.
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Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
Common questions
Is the 2015 Infiniti Q40 reliable?
Limited NHTSA data. Only 8 owner complaints have been filed for the 2015 Infiniti Q40, which is not enough for a meaningful reliability score. Active recalls (if any) are listed on this page and remain authoritative — those are verified defects regardless of complaint volume. For a confident reliability read we look for at least 10 owner complaints in the federal database.
Should you avoid the 2015 Infiniti Q40?
Only 8 NHTSA complaints on file — too few for a confident reliability call. Could be a clean record or just thin data. We don't issue a buy/avoid verdict on the 2015 INFINITI Q40 without a meaningful complaint sample — doing so off a handful of filings would be guesswork.
What should I check before buying a used 2015 Infiniti Q40?
There isn't enough NHTSA complaint data on the 2015 Infiniti Q40 to flag a standout failure pattern. Run the VIN for open recalls — those are free to fix regardless of warranty — get a standard pre-purchase inspection, and ask the seller for service records.
Is the 2015 Infiniti Q40 a good used car to buy?
Hard to say from federal data alone — only 8 owner complaints have been filed. Lean on the recall list above, a pre-purchase inspection, and a vehicle-history report on the specific VIN. Our data tells you what the model is known for; a history report tells you what that exact car has been through.
What's the most common problem on the 2015 Infiniti Q40?
Based on NHTSA records, the most-reported issue is airbags, with 3 complaints filed. Typical failure occurs around 39,000 miles. Average repair cost runs about $1,100 at an independent shop.
What's the most expensive thing that goes wrong?
The airbags is one of the costlier repair items. Average repair cost runs about $1,100 at an independent shop. Typical failure occurs around 39,000 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my Infiniti Q40 has open recalls?
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.
Is an extended warranty worth it on a 2015 Infiniti Q40?
Hard to say from NHTSA data alone with only 8 complaints on file. A quality service contract runs $1,800–3,500 over 3 years. The decision comes down to your specific situation: vehicle cost, miles on it, how long you plan to keep it, and whether you can absorb a $3K–$8K repair without straining cashflow. With limited public data on this vehicle, lean on the recall list above and check owner forums before committing.