2015 Infiniti Q40 Specs: MPG, Gas Mileage, Engine Size & Dimensions
2015 Infiniti Q40 Specs at a Glance
The 2015 Infiniti Q40 gets 22 mpg combined on the 3.7L Rear-Wheel Drive configuration. Figures are per configuration, not a single official number — other trims rate as low as 20 mpg combined. Every figure below comes from EPA, NHTSA, or manufacturer published data — no estimates.
- Combined MPG
- 22 mpg (19 city / 27 hwy)
- Best configuration: 3.7L · Rear-Wheel Drive · Automatic (S7) · other 2015 trims rate 20–22 mpg combined
- Engine
- 3.7L 6-cyl
- 3.7L · Rear-Wheel Drive · Automatic (S7)
2015 Infiniti Q40 trims and MPG
| Trim | Engine | Trans | Drive | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Auto (S7), 6 cyl, 3.7 L | 6 · 3.7L | Automatic (S7) | Rear-Wheel Drive | 19 | 27 | 22 |
| Auto (S7), 6 cyl, 3.7 L | 6 · 3.7L | Automatic (S7) | All-Wheel Drive | 18 | 25 | 20 |
Detailed Specifications
MPG & Fuel Economy
MPG for every year and trim
View details →Engine Specifications
Engine Specs for every year and trim
View details →Annual Fuel Cost
Fuel Cost for every year and trim
View details →Transmission Specifications
Transmission for every year and trim
View details →Drivetrain & Drive Type
Drivetrain for every year and trim
View details →Vehicle Class & EPA Size Category
Vehicle Class for every year and trim
View details →Maintenance Schedule & Service Intervals
Maintenance for every year and trim
View details →Infiniti Q40 — All Years Overview
| Year | Trim | Engine | Trans | Drive | City | Hwy | Combined | Fuel |
|---|---|---|---|---|---|---|---|---|
| 2015 | Auto (S7), 6 cyl, 3.7 L | 6 · 3.7L | Automatic (S7) | Rear-Wheel Drive | 19 | 27 | 22 | Premium Gasoline |
| 2015 | Auto (S7), 6 cyl, 3.7 L | 6 · 3.7L | Automatic (S7) | All-Wheel Drive | 18 | 25 | 20 | Premium Gasoline |
Compare across every brand
All Infiniti Q40 specifications
Infiniti Q40 — Frequently Asked Questions
What is the fuel economy of the 2015 Infiniti Q40?
The Infiniti Q40 is EPA-rated at up to 22 MPG combined (19 city / 27 highway).
What engine does the 2015 Infiniti Q40 have?
The Infiniti Q40 uses a 3.7L 6-cylinder engine paired with an Automatic transmission.
What years of the Infiniti Q40 are covered here?
This page documents 2 verified Infiniti Q40 configurations across model years 2015–2015.
How many engine options does the Infiniti Q40 have?
Across every year on record the Infiniti Q40 uses one displacement, 3.7L, so trims differ by drivetrain and equipment rather than engine size.
Is the 2015 Infiniti Q40 front-wheel drive or all-wheel drive?
The Infiniti Q40 appears in 2 drivetrain layouts across the years documented here — Rear-Wheel Drive, All-Wheel Drive — with the latest 2015 record on Rear-Wheel Drive.