INFINITI Q40: Trims, Generations & Buyer's Guide

Last updated August 4, 2026

INFINITI Q40

The INFINITI Q40 is a midsize luxury sport sedan known for strong V6 power, sharp responses, and an upscale cabin. Sold only for 2015, it was essentially the outgoing G37 sedan with a new name and a simpler lineup.

The Q40 carried forward the traditional sport-sedan character of the G37 rather than starting a new chapter. Its appeal centered on quick acceleration, responsive road manners, and a crafted cabin instead of the newest technology. The Q40 name lasted just one model year before production ended.

Strengths

  • Its 328-horsepower V6 gave the Q40 quick acceleration in 2015.
  • Sharp responses give it the traditional, driver-focused feel that defined the G37 before it.
  • The cabin has an upscale, crafted character without making technology the main attraction.
  • Its simple two-version range keeps the used-car shopping decision relatively uncomplicated.

Who it's for

The Q40 suits someone shopping for a used luxury sedan who cares more about V6 performance and a connected driving feel than having the latest cabin technology. It also makes sense for a buyer who prefers a short, uncomplicated model range.

INFINITI Q40 lineup

The 2015 lineup was intentionally simple, with the base Q40 and the Q40 AWD serving as versions of the same V6 sedan rather than distinctly themed trims. Pick the regular Q40 for the most straightforward expression of the car, or the Q40 AWD when all-wheel drive is the priority. Both retain the same older-school luxury sport-sedan focus on power and driving feel.

INFINITI Q40 generations

From 2015 to 2015, the Q40 spans 1 generation. The current 4th Generation — V36 arrived for 2015.

4th Generation — V36 (2015)

The Q40 was the outgoing G37 sedan with a new name, not a redesign. It kept the 3.7-liter V6 and 7-speed automatic, with rear-wheel drive or AWD, for one final model year.

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4th Generation — V36 (2015) INFINITI Q40
2015

The G37 Sedan was renamed Q40, and the lineup was simplified to Q40 and Q40 AWD before production ended.

What's new by year

See what changed in a specific model year of the INFINITI Q40.

Frequently asked questions

Is the INFINITI Q40 basically a G37 with a new name?

Yes. The Q40 was the outgoing G37 Sedan renamed for its final model year. It kept the same basic platform, 3.7-liter V6, and 7-speed automatic rather than receiving a redesign.

What body style is the INFINITI Q40?

The Q40 is a four-door sedan with seating for five. It was not offered under the Q40 name as a coupe, wagon, or SUV.

Does the INFINITI Q40 come as a hybrid?

No. The Q40 lineup used a gasoline-powered 3.7-liter V6. There was no hybrid version under the Q40 name.

What engine and transmission does the Q40 have?

Every Q40 has a 328-horsepower 3.7-liter V6 and a 7-speed automatic transmission. The automatic includes a manual shift mode and matches engine speed during downshifts for smoother response.

Is the INFINITI Q40 rear-wheel drive or all-wheel drive?

The Q40 was sold in both forms. The regular Q40 uses rear-wheel drive, while the Q40 AWD sends power to all four wheels for added traction when roads are slippery.

What is the INFINITI Q40 known for?

The Q40 is known for strong V6 acceleration, responsive handling, and a well-trimmed cabin. Its appeal is a traditional sport-sedan driving feel rather than the newest cabin technology.

Who is the INFINITI Q40 a good fit for?

The Q40 suits someone who wants a compact premium sedan with strong power, straightforward controls, and an engaging feel. Shoppers who put newer technology ahead of performance may find its older design less appealing.

Did the INFINITI Q40 have more than one generation?

No. The Q40 name lasted for one model year and covered the final version of the fourth-generation G sedan platform. Production ended afterward, so there was never a redesigned Q40 generation.

INFINITI Q40 Reviews

What owners are saying about the INFINITI Q40.

4.2
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.

“The front cupholder does not hold one drink steady when I drive around corners, and it barely fits two cups at once. I also hit my drink with my elbow a lot.”

MTMichele T.
2015 INFINITI Q40 Sedan AWD

“Issue I had was with Bluetooth connectivity with my iPhone 6 and playing my music. Sometimes it connects and sometimes it does not. Not consistent.”

AGAnn G.
2015 INFINITI Q40 Sedan AWD
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

“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

“Vehicle has a good pick up, great handling. A little more leg room needed in the front.”

MLMark L.
2015 INFINITI Q40 Sedan AWD
No rating

“I like most things in my new car. But there is one more thing that I need. AUX cable possibility.”

EYEun Y.
2015 INFINITI Q40 Sedan AWD