DecodedCars2015 Infiniti Q40
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2015 models.
- Class
- Midsize Cars
- Engines
- 3.7L 6-cyl
- Drivetrain
- Rear-Wheel Drive, All-Wheel Drive
- Fuel
- Premium Gasoline
- MPG (best)
- 22 combined · 19 city / 27 hwy
- Length
- –
- Curb weight
- –
- NHTSA rating
- Not rated
- Recalls
- 0 campaigns
Pros & cons
What's good
- AWD / 4WD available
- No recalls so far
Watch out for
- Below-average fuel economyBest version gets 22 MPG combined, 14% below the 2015 midsize car average of 25.7 MPG.
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Calculated from EPA, NHTSA and vPIC data against 19 similar 2015 models — not a review. How we calculate this →
Overview
The 2015 Infiniti Q40 is a midsize car offered with a 3.7L 6-cyl engine and rear-wheel drive and all-wheel drive.
EPA rates its most efficient version at 22 MPG combined (19 city / 27 highway), 14% worse than the 2015 midsize car average of 25.7 MPG, for an estimated $3,750 a year in fuel.
NHTSA has not published a 5-Star overall rating for this model year.
It has 0 recall campaigns on file and owners have filed 8 complaints with NHTSA since 2015, most often about the air bags.
Engines, MPG & running costs
| Version | Engine | Transmission | Drive | City / Hwy / Comb | vs. class | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|---|---|
| Q40 | 3.7L 6-cyl | Automatic (S7) | Rear-Wheel Drive | 19 / 27 / 22 | -14% | $3,750 | 412 |
| Q40 AWD | 3.7L 6-cyl | Automatic (S7) | All-Wheel Drive | 18 / 25 / 20 | -22% | $4,100 | 436 |
EPA estimates; "vs. class" is combined MPG against the 2015 EPA class average. How we calculate this →
Safety ratings & technology
NHTSA has not published 5-Star ratings for the 2015 Infiniti Q40.
Similar 2015 midsize cars
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2015 Infiniti Q40 (this car) | 22 MPG | Not rated | 0 |
| 2015 BMW 5 Series | 30 MPG | Not rated | 0 |
| 2015 Mercedes-Benz E-Class | 25 MPG | Not rated | 0 |
| 2015 Audi A6 | 29 MPG | Not rated | 4 |
| 2015 Lexus LS | 20 MPG | Not rated | 1 |
| 2015 Lexus GS | 31 MPG | Not rated | 1 |
| 2015 Lexus ES | 40 MPG | Not rated | 1 |
Recalls (0)
No vehicle recalls on file with NHTSA for the 2015 Infiniti Q40.
Check your VIN for open recalls at NHTSA ↗Not every 2015 Infiniti Q40 is affected — only a VIN check confirms your car.
Owner-reported problems
Unverified owner reports; best-sellers collect more.
Used 2015 Infiniti Q40 buyer's checklist
- Run the VIN at nhtsa.gov/recalls. No recalls on file, but check anyway.
- Air Bags — 3 owner reports. Confirm the airbag warning light turns off after start-up and any airbag recall was completed.
- Electronic Stability Control (Esc) — 1 owner reports. Ask the seller and mechanic specifically about this system.
- Structure — 1 owner reports. Open and close every door, the hood and tailgate; look for rust or misaligned panels.
- Mileage to watch. Owners typically reported problems around 25,000 miles; ask what was repaired near that point.
- Before you pay: service records, a history report and an independent inspection.
Generated by DecodedCars from NHTSA recalls and owner complaints for the 2015 Infiniti Q40. Not a substitute for a professional inspection.
Sources: EPA, NHTSA, Transport Canada, Wikimedia Commons. Not affiliated with NHTSA, the EPA or Infiniti. How we calculate this →