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Infiniti Q40Model year report

2015 Infiniti Q40 Problems

Complaints
8filed with NHTSA
Median mileage
25,000miles, 7 complaints with mileage
Recalls
0campaigns on record
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA crash rating
—no overall rating published
EPA fuel economy
22 mpgcombined, 3.7L 6-cyl RWD · 19 city / 27 hwy

Sources: NHTSA records for the 2015 Infiniti Q40 (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error

NHTSA recorded 8 consumer complaints for the 2015 Infiniti Q40. The part named most often is air bags, with 3 complaints (38% of the total), followed by other or unknown (3) and electrical system (1). 7 of the complaints include a mileage, and 57% of those were filed for vehicles with under 50,000 miles; the median is 25,000 miles. Of all complaints, 1 involved a crash, 1 an injury, according to the filers. NHTSA lists 0 recall campaigns and 91 technical service bulletins for this model year. Air bags complaints overlap with 2 technical service bulletins filed under the same part. Other or unknown complaints overlap with 1 technical service bulletin filed under the same part.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Air bags: “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 sat in the passenger seat and pointed it out to me. This is while she was sitting with the seat belt while the car was moving at any speed.”

NHTSA complaint #11258627, filed 2019-09, 60,000 miles

Other or unknown: “The car when parked on a steep slope with the emergency brake/parking brake on will start to roll on its own. Infiniti was contacted and blamed my driveway as the problem but I have 6 cars and the Infiniti is the only car that cant stay parked and rolls when parked. Was told id have to pay 3 thousand dollars if I wanted my car to get checked.”

NHTSA complaint #11325245, filed 2020-05, 25,000 miles

Electrical system: “A common issue found in the Infiniti Q40/G37 lineage, the sunroof drain became clogged leading to an influx of moisture underneath the flooring and within the panels of the right half of the vehicle. Due to the fault, electrical components such as the BCM and ECM were exposed to moisture, leading to numerous issues.”

NHTSA complaint #11654319, filed 2025-04

Electronic stability control: “While in motion on a highway the vdc (auto hydroplane correct function) is suspected to have caused increase loss of control of vehicle. I was able to observe that the vdc light was flickering on and off. It did initially come on to auto correct but then abruptly the vehicle started to hydroplane, despite the function being on and caused me to have to divert into a guardrail...”

NHTSA complaint #11240262, filed 2019-07, 52,000 miles

Mileage when problems were reported

57% of the 7 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 18,000 and 52,000 miles.

29%0–1014%10–2514%25–5029%50–750%75–10014%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (7 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 25,000 miles.

Complaints by year filed

Fewer than 15 complaints, too few for a reliable trend.

20152201720192202020242025
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Crash test ratings

NHTSA's 5-Star Safety Ratings for the 2015 Infiniti Q40. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.

VersionOverallFrontalSideSide poleRollover
Q40 · sedan AWDnot rated———5 · 10.1% risk
Q40 · sedan RWDnot rated———5 · 10.1% risk

Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.

Fuel economy and running cost

EPA ratings for each 2015 Infiniti Q40 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
Q40 RWD3.7L 6-cyl7-speed automatic192722$3,750
Q40 AWD3.7L 6-cyl7-speed automatic182520$4,100

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

NHTSA lists no recall campaigns for the 2015 Infiniti Q40 in the data used here. A recall can apply to some vehicles of a model year and not others, so check a specific vehicle by VIN at nhtsa.gov/recalls.

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 91 on record; the latest 10 are shown.

See all 91 bulletins →

Other model years of the Infiniti Q40

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
2015825,0000—22—Not enough data

All Infiniti Q40 model years

Frequently asked questions

How many NHTSA complaints does the 2015 Infiniti Q40 have?

NHTSA recorded 8 consumer complaints for the 2015 Infiniti Q40 as of Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2015 Infiniti Q40 is reported most often?

Air bags is named most often, in 3 complaints (38% of the total), followed by other or unknown with 3.

Has the 2015 Infiniti Q40 been recalled?

NHTSA lists no recall campaigns for this model year in the data used here. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2015 Infiniti Q40 get?

The EPA rates the 2015 Infiniti Q40 (Q40, 3.7L 6-cyl) at 22 mpg combined, 19 city and 27 highway, with an estimated annual fuel cost of $3,750 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2015 Infiniti Q40 reported?

Among the 7 complaints that include a mileage, the median is 25,000 miles and the middle half falls between 18,000 and 52,000 miles; 57% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.