2015 Infiniti Q40 Report
Known issues, recalls, running costs, and what to check before you buy.

Overall Score
Key Takeaways
- The 3.7-liter V6 engine provides ample power for confident passing and merging.
- Rear-wheel drive offers engaging handling, with all-wheel drive available for enhanced traction.
- Fuel economy is respectable for a V6, achieving up to 22 MPG combined.
- The interior, while well-built, reflects styling from an earlier era.
2015 Infiniti Q40
Critical Failure Risk
While not safety-related, TSBs suggest occasional minor electrical issues, such as infotainment system quirks or sensor readouts. These are typically resolved with software updates or component resets.
Early detection can help you avoid a $200-$800 repair.
Safety & Bulletins
Owner Complaints
No primary complaint themes found.
Performance & Efficiency
Reliability
Practicality
The score is mainly limited by high fuel consumption.
Who This Car Is For
Best for
Drivers seeking a reliable, powerful, and comfortable sedan with a premium badge.
+2 more buyer-fit notes in the full report
Avoid if
Those prioritizing the latest technology and infotainment features.
+2 more buyer-fit warnings in the full report
2015 Infiniti Q40 Reliability Analysis
Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2015 Infiniti Q40.
Limited reliability records are available for this model year.
Vehicle Specs
- Fuel Type
- Premium
- Transmission
- Automatic (S7)
- Drivetrain
- Rear-Wheel Drive
- Body Style
- Sedan
- EPA Combined MPG
- 22
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Most Common Issues
1. Minor Electrical Glitches
Most reportedUsage data observed
2. HVAC System Performance
Usage data observed
First Service Interval
- Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection
Est. shop cost: $100 - $200
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FAQ
Is the 2015 Infiniti Q40 reliable?
The CarFocal Reliability Score for the 2015 Infiniti Q40 is 9.2/10. Reliability score is 9.2/10. NHTSA recalls: 0. Owner complaints: 0.
How practical is the 2015 Infiniti Q40 for daily use?
Practicality score is 5.0/10. The score is mainly limited by high fuel consumption. EPA combined economy is 22 MPG.
What is the overall score for the 2015 Infiniti Q40?
The CarFocal Overall Score for the 2015 Infiniti Q40 is 6.9/10. Overall score is 6.9/10 (Good). Confidence 55%. Maintenance 8.5/10. Practicality 5.0/10.
What does it cost to own and maintain a 2015 Infiniti Q40?
Based on Carfocal's data, First listed service: - Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection at 5,000 miles. Estimated first-year maintenance: $700 - $1,500. Repair prediction highlight: Brake Pads and Rotors (typical at 60,000 miles, estimated cost Min: $500 • Max: $900).
What engine is in the 2015 Infiniti Q40?
Engine specs list 6 • 3.7.
What transmission does the 2015 Infiniti Q40 use?
According to CarFocal's specs for the 2015 Infiniti Q40, transmission is Automatic (S7). The paired drivetrain is Rear-Wheel Drive.
Does the 2015 Q40 require Premium gas?
Manufacturer fuel recommendation: Premium.
What is the combined EPA MPG for the 2015 Infiniti Q40?
EPA combined estimate is 22 MPG.
What driver assistance and safety features are available on the 2015 Infiniti Q40?
1 standard driver assistance features. Key features include Tire Pressure Monitoring System.
What body style is the 2015 Infiniti Q40?
According to CarFocal's specs for the 2015 Infiniti Q40, body style is sedan.
What drivetrain does the 2015 Infiniti Q40 use?
According to CarFocal's specs for the 2015 Infiniti Q40, drivetrain is Rear-Wheel Drive. Transmission is Automatic (S7).
What are the NHTSA safety ratings for the 2015 Infiniti Q40?
NHTSA ratings: Rollover 5/5.
Should buyers consider alternatives to the 2015 Infiniti Q40?
Alternatives listed in this guide: 2015 Acura TLX and 2015 Audi A4.