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Research · Midsize Cars

2015 Infiniti Q40Recalls, problems, MPG & safety

NHTSA lists 0 safety recalls and 8 owner complaints for the 2015 Infiniti Q40. Most complaints involve air bags (3) and electrical system (1). The EPA rates it 20–22 mpg combined.

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Combined MPG
20–22mpg
EPA · 2 versions
NHTSA overall
—
Not rated by NCAP
Safety recalls
0campaigns
NHTSA
Owner complaints
8
Top: air bags
Fuel cost / yr
$3,400est.
EPA estimate, best version
01 —Recalls

Safety recalls

NHTSA campaigns for this model year
0 recalls found in NHTSA data for the 2015 Infiniti Q40 as of Nov 12, 2026.
Data from NHTSA Recalls API · synced Nov 12, 2026NHTSA vehicle page
02 —Complaints

Owner complaints by component

8 complaints filed with NHTSA · Sep 2015 – Apr 2025
  1. Air bags3
  2. Electrical system1
  3. Exterior lighting1
  4. Structure1
  5. Electronic stability control (esc)1
  6. Other / unknown3

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

By model year

Complaints for each Q40 model year we’ve synced.

Only one model year synced so far.

Crashes reported
1
Fires reported
0
Injuries reported
1
Deaths reported
0
Data from NHTSA Complaints API · synced Nov 12, 2026NHTSA vehicle page
03 —Common problems

What owners report most

Verbatim excerpts from NHTSA complaints, by component

Air bags

3 reports
“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.”
Owner complaint to NHTSAFiled Sep 27, 2019Air bagsODI 11258627

Electrical system

1 report
“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.”
Owner complaint to NHTSAFiled Apr 13, 2025Electrical system, Exterior lightingODI 11654319

Exterior lighting

1 report
Send a problem to a mechanic on findmechanic.ai
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 12, 2026
04 —Key specs

Engines, transmissions & drive

2 versions rated by the EPA
EPA class
Midsize Cars
Engines
3.7L 6-cyl
Transmissions
Automatic (S7)
Drive
Rear-Wheel Drive · All-Wheel Drive
Fuel
Premium Gasoline

Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.

Data from EPA fueleconomy.gov · synced Nov 12, 2026EPA listing
05 —Fuel economy

EPA fuel economy by version

City / highway / combined, annual fuel cost and CO₂
EPA
VersionCityHwyComb.Fuel / yrCO₂ g/mi
Q40
Auto (S7), 6 cyl, 3.7 L · Rear-Wheel Drive
192722$3,400412
Q40 AWD
Auto (S7), 6 cyl, 3.7 L · All-Wheel Drive
182520$3,750436
  • Q40
    Auto (S7), 6 cyl, 3.7 L
    19 city · 27 hwy · $3,400/yr
    22
    mpg comb.
  • Q40 AWD
    Auto (S7), 6 cyl, 3.7 L
    18 city · 25 hwy · $3,750/yr
    20
    mpg comb.
Estimate your fuel costCost of ownership
Data from EPA fueleconomy.gov · synced Nov 12, 2026 · Fuel cost is EPA’s annual estimate (15,000 mi, 55% city)
06 —Safety

NHTSA 5-Star Safety Ratings

2 tested variants
NHTSA has not published 5-Star Safety Ratings for the 2015 Infiniti Q40 as of Nov 12, 2026.
Data from NHTSA NCAP Safety Ratings API · synced Nov 12, 2026Vehicle 9337Vehicle 9336
07 —Maintenance

Maintenance basics

General guidance, not the OEM schedule. Check your owner’s manual.
General guidance
ItemMilesTimeNote
Engine oil & filter5,000–10,000 mi6–12 monthsFollow the oil-life monitor if fitted
Tire rotation5,000–7,500 miEvery oil changeCheck pressure monthly
Engine air filter15,000–30,000 mi1–2 yearsSooner in dusty areas
Cabin air filter15,000–25,000 mi1–2 years
Brake fluid—2–3 yearsAbsorbs moisture over time
Coolant60,000–100,000 mi5–10 yearsLong-life coolants last longer
Spark plugs60,000–100,000 mi—Iridium/platinum plugs at the long end
12V battery—3–5 yearsHeat shortens battery life
  • Engine oil & filter5,000–10,000 mi
    6–12 months
  • Tire rotation5,000–7,500 mi
    Every oil change
  • Engine air filter15,000–30,000 mi
    1–2 years
  • Cabin air filter15,000–25,000 mi
    1–2 years
  • Brake fluid—
    2–3 years
  • Coolant60,000–100,000 mi
    5–10 years
  • Spark plugs60,000–100,000 mi
    —
  • 12V battery—
    3–5 years
Typical intervals for modern cars. Severe service (towing, short trips, extreme heat or cold) shortens them.
09 —FAQ

2015 Q40 questions

How many recalls does the 2015 Infiniti Q40 have?

0 recalls found in NHTSA data as of Nov 12, 2026.

What are the most common 2015 Infiniti Q40 problems?

Owners filed 8 complaints with NHTSA. The most-cited components are air bags (3), electrical system (1), exterior lighting (1). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.

What MPG does the 2015 Infiniti Q40 get?

The EPA rates the 2015 Infiniti Q40 at 20–22 mpg combined, depending on engine and drivetrain (2 versions rated).

Data from NHTSA & EPA · synced Nov 12, 2026