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2015 Infiniti Q40 Report

Known issues, recalls, running costs, and what to check before you buy.

Updated Jun 4, 2026·Ryan Davis
2015 Infiniti Q40 Report

Overall Score

6.9/ 10
Our Verdict
Proceed with caution

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.
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OverviewWho This Car Is ForReliability & ProblemsVehicle SpecsUnlock Full ReportFAQ
Overview

2015 Infiniti Q40

The 2015 Infiniti Q40, essentially a rebadged G37 sedan, delivers a potent blend of performance and luxury in a practical sedan package. Powered by a robust 3.7-liter V6 engine paired with a smooth 7-speed automatic transmission, it offers brisk acceleration and a refined ride. While its design may feel dated compared to newer rivals, the Q40 remains a compelling option for those prioritizing a powerful engine and a comfortable interior. Its reliability record is generally strong, with no reported safety recalls or consumer complaints to NHTSA.

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.

Open Maintenance Analysis →

Safety & Bulletins

Open Recalls0
Service Bulletins0
Full Recall History →

Owner Complaints

0

No primary complaint themes found.

Detailed Issue Breakdown →

Performance & Efficiency

Fuel Efficiency
Combined
22
MPG
City
19
MPG
Highway
27
MPG
Full Vehicle Specifications ↓

Reliability

9.2/ 10

Practicality

5.0/ 10

The score is mainly limited by high fuel consumption.

Buyer Fit

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.

  • Recall TimelineOfficial safety notices
  • Owner ComplaintsReal driver reports
  • Failure AnalysisKnown part defects

Limited reliability records are available for this model year.

Specs

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 reported

Usage data observed

2. HVAC System Performance

Usage data observed

See all common issues in the maintenance guide

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

5,000 mi

Unlock the full maintenance guide for every scheduled service interval and cost forecast.

Full pre-purchase inspection checklist
Complete maintenance schedule (4 service intervals)
Repair forecasts with mileage and cost context
Full buyer-fit guidance and who should avoid it
Full specs and trim-level context
Full safety recall details
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FAQ

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.

Start Here

Maintenance guide

Costs + intervals

Recall report

Campaigns + remedy notes

Owner complaints

Issue volume + categories

In this guide

  1. 01Overview
  2. 02Who This Car Is For
  3. 03Reliability & Problems
  4. 04Vehicle Specs
  5. 05Unlock Full Report
  6. 06FAQ

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