2015 INFINITI Q40: What's New, Specs & Features

Last updated August 4, 2026

2015 INFINITI Q40

The biggest change for 2015 is the name: INFINITI renamed the outgoing G37 Sedan as the Q40 for its final model year. This is a light lineup update rather than a redesign, with the same V6 and automatic transmission.

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About the 2015 INFINITI Q40

Fourth-generation G sedan platform (V36), final year; 2015 is the only year this sedan used the Q40 name before production ended.

Infiniti positions the Q40 as a premium sport sedan built around strong V6 power, sharp responses, and an upscale cabin rather than the newest tech trend. Official material emphasizes its dramatic styling, crafted interior, and engaging performance, while independent reviews point to the same core appeal: quick acceleration and a traditional sport-sedan driving feel. For most buyers, the Q40 is the simpler, more driver-focused alternative in Infiniti’s sedan range.

The 2015 Q40 is a well-equipped premium sport sedan sold in rear-wheel-drive Q40 and all-wheel-drive Q40 AWD versions. Both pair a 328-hp 3.7-liter V6 with leather seating, heated power front seats, xenon headlights, a 7-inch display, a rearview camera, Bluetooth, and push-button start.

What changed, by category

Styling
The G37 Sedan is renamed Q40 and receives Q40 badging, with no broader exterior redesign. The range is simplified to Q40 and Q40 AWD versions.

2015 INFINITI Q40 specs and features by trim

2015 INFINITI Q40Base0 in stock
EngineV6, 3.7 Liter
TransmissionAuto, 7-Spd Rev Match
DrivetrainAWD
Fuel TypeGas
MPG City19 mpg
MPG Highway27 mpg
Horsepower328 hp
Torque269 lb-ft
Trunk/Cargo13.5 cu-ft
Rear Legroom34.7 in
Seats5
Doors4
Alarm System
Rear View Camera
Alloy Wheels
Fog Lights
Power Moonroof
Rear Spoiler
Bluetooth
Navigation System
Premium Audio
Satellite Radio
USB Ports
Dual-Zone Climate Control
Heated Front Seats
Leather Seats
Proximity Keyless Entry
Push-Button Engine Start

Frequently asked questions

Is the 2015 INFINITI Q40 the same car as the G37 Sedan?

Yes. The 2015 Q40 is the outgoing G37 Sedan under a new name, not a redesigned model. It keeps the same basic platform, 3.7-liter V6, and 7-speed automatic transmission.

Did the 2015 INFINITI Q40 get a new engine?

No. The 2015 Q40 carries over the 328-hp 3.7-liter V6 and 7-speed automatic transmission rather than receiving a new powertrain.

Does the 2015 INFINITI Q40 have all-wheel drive?

Yes. The 2015 lineup consists of the rear-wheel-drive Q40 and the all-wheel-drive Q40 AWD.

Was the 2015 INFINITI Q40 redesigned?

No. The 2015 Q40 is a renamed G37 Sedan with a simplified lineup, not a new generation or major mechanical update.

Was 2015 the only year for the INFINITI Q40 name?

Yes. The sedan used the Q40 name only for 2015, its final model year before production ended.

2015 INFINITI Q40 Reviews

What owners are saying about the 2015 INFINITI Q40.

4.2
2015 INFINITI Q40
(116 reviews)
5 stars (49)
4 stars (45)
3 stars (16)
2 stars (4)
1 star (2)

About owner reviews

Carvana owner reviews are provided in partnership with Strategic Vision, one of the largest automotive consumer research providers in the U.S. Star ratings are from ranking surveys completed by owners one to six months post-purchase. Comments from owners are optional, but included here when available.

No rating

“The vehicle is still comparatively new, but so far we're very pleased with it. The G35x we traded in had accumulated 138k miles and, besides being fun to drive, had been relatively trouble free - significant reasons for getting another Infinity, particularly when we discovered that the weak G35 brakes had been markedly improved.”

TWThomas W.
2015 INFINITI Q40 Sedan AWD

“The only things I would like better are if the ride height was lower and a better-looking rim for the sedan.”

LCLawrence C.
2015 INFINITI Q40 Sedan RWD
No rating

“I like luxury, but am not willing to overpay for it or put my comfort ahead of my family's needs...”

PKPhilip K.
2015 INFINITI Q40 Sedan RWD

Sources