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2015 Infiniti Q70: New Car Review

Editor’s note: If you’re looking for information on a newer Infiniti Q70, we’ve published an updated review: 2019 Infiniti Q70 Review.


You may still be learning Infiniti’s new naming structure, so if the 2015 Infiniti Q70 doesn’t ring a bell, don’t worry; you’re not alone. Formerly known as the Infiniti M, the Q70 carries on as Infiniti’s midsize luxury performance sedan and is offered in nine distinct options, including a powerful V6, a potent V8, a surprisingly quick hybrid and a new stretched wheelbase model. All but the hybrid are available with all-wheel drive. Name changes aside, the Q70 is one imposing luxury sport sedan. Far from being just an Audi or BMW knockoff, the Q70’s unique combination of style, performance and technology makes for a truly enjoyable driving machine.

Inside, the Q70 wraps its occupants in traditional Infiniti luxury amenities, including a long list of standard items that cost extra in many of the Q70’s competitors. A backup camera, Intelligent Key keyless entry and start, and heated front seats can be found in even the most basic model. There are several attractive option packages.

Just about the only gripe we can find with the 2015 Q70 is the lackluster choice of exterior colors, which are primarily shades of black or silver and just two colors: dark brown and dark blue. We think a car that’s this exciting deserves at least one vivid red or brilliant blue in its color options. See the 2015 Infiniti Q70 models for sale near you

What’s New for 2015?

The Q70L, which has a stretched wheelbase, is now on the lineup. It adds 5.6 inches of additional legroom to the rear seat. Other changes include subtle exterior styling upgrades, new 18-in wheel designs and upgraded standard features for all trims. The Premium Package is complimentary on the base Q70 through September of 2015. 

What We Like

Elegant styling; lovely interior design; lots of high-tech features; good fuel economy in hybrid models

What We Don’t

High prices and poor fuel economy in V8 models; narrow front seats; lack of color choices

How Much?


Fuel Economy

The base Q70 3.7 is powered by a smooth and lively 3.7-liter V6 that’s good for 330 horsepower and 270 lb-ft of torque. In the hybrid model, an older 3.5-liter version of the same engine is mated to a 50 kW electric motor. The hybrid’s combined output is slightly better than the standard V6’s, producing 360 hp and 258 lb-ft of torque. The Q70 5.6 uses a powerful 5.6-liter V8, producing 420 hp and 417 lb-ft of torque. All but the hybrid can be equipped with Infiniti’s Intelligent All-Wheel Drive. Similarly, all Q70 models use the same 7-speed automatic transmission, which features manual shift control and downshift rev matching. The transmission also comes with Infiniti’s Drive Mode program, which offers four handling settings: normal, economy, sport and snow.

Fuel economy for the Q70 3.7 is rated at 18 miles per gallon in the city and 26 mpg on the highway, while the all-wheel-drive version is rated at 17 mpg city/24 mpg hwy. The Q70 Hybrid moves those figures up to a very impressive 27 mpg city/32 mpg hwy. The V8-powered Q70 5.6 goes in the opposite direction: The rear-wheel-drive model delivers 16 mpg city/24 mpg hwy, and the all-wheel-drive model gets 16 mpg city/23 mpg hwy.

Standard Features & Options

There are nine trims in the 2015 Q70 line: Q70 3.7, Q70 3.7 AWD, Q70 5.6, Q70 5.6 AWD, Q70 Hybrid, and the stretched Q70L are offered in all the same variations, except for in the hybrid model.

The Q70 3.7 ($50,755) and Q70L 3.7 ($52,255) bring 18-in alloy wheels, HID headlights, a power glass moonroof, front fog lights, Intelligent Key with push-button start and remote window control, power-folding heated side mirrors with a tilt-down feature, rain-sensing wipers, an automatic trunk closer, 10-way power driver and passenger seats, heated front seats, AM/FM/CD stereo with six speakers, iPod and USB interface, Active Noise Control, Bluetooth, a power tilt-telescopic steering wheel, a rearview monitor, cruise control, dual-zone automatic climate control and rear console-mounted heat vents. The optional Premium Package is being offered at no cost through September of 2015 (see optional equipment for a list of its contents).

The Q70 3.7 AWD ($52,905) and Q70L 3.7 AWD ($54,405) have the same features as the 3.7, plus Infiniti’s Intelligent All-Wheel Drive.

The Q70 Hybrid ($56,805) adds a hybrid electric/gasoline engine and the same standard content as the 3.7.

The Q70 5.6 ($63,755) and Q70L 5.6 ($64,455) add climate-controlled front seats, leather seats, voice-activated navigation, a Bose 10-speaker audio system, Infiniti Connection telematics, Around View Monitor, a rear sonar system and a heated steering wheel.

The Q70 5.6 AWD ($66,255) and Q70L 5.6 AWD ($67,955) have the same content as the 5.6, plus Infiniti’s Intelligent All-Wheel Drive.

Options packages for the 3.7 trims include the Premium Package, which brings navigation, Bose Premium Audio, climate-controlled front seats, a heated steering wheel and a rear sonar system. The Sport Touring Package adds the 16-speaker Bose Studio Surround system, the Forest Air air-purification system (it detects foul odors or noxious fumes, closes the system to outside air, and then recirculates air through a Plasmacluster purifier, at which point the clean air is pumped through the cabin at various speeds, simulating a gentle outdoor breeze) and a power rear sunshade. Sport packages are not available on the L trims.

Available on all trims is the Technology Package that brings a blind spot monitoring system, lane-departure warning and prevention, Intelligent Cruise Control, Distance Control Assist, forward-collision warning, backup-collision intervention and Adaptive Front Lighting. The Deluxe Touring Package brings semi-aniline leather seating, a Bose Studio surround system and premium soft-touch features with enhanced wood and leather trim. Finally, a Sport Package includes 20-in wheels, magnesium paddle shifters, sport brakes, sport suspension and a sport steering wheel.


Infiniti equips the Q70 with standard traction and stability control, 4-wheel anti-lock brakes and a tire-pressure monitoring system. The passenger compartment is protected by front, front-side impact, and front- and rear side-curtain airbags.

The Q70 is so well constructed that it earned a Top Safety Pick rating from the Insurance Institute for Highway Safety.

The Q70 can be equipped with numerous features designed to aid the driver, all of which are bundled in the Technology Package. Topping the list is Intelligent Cruise Control, which is a system that uses radar to keep a safe distance between the Q70 and the traffic ahead. The lane-departure warning and prevention system alerts the driver when the car is crossing out of its lane, and it will even nudge the vehicle back over if the driver isn’t paying attention. The blind spot monitoring system provides a warning if there’s a car in the driver’s blind spot, and Adaptive Front Lighting turns the headlights in the direction that the vehicle is steering.

Behind the Wheel

We drove all three models. The V8-powered 2015 Infiniti Q70 5.6 is the one for power junkies, but we also found the V6 and hybrid models to be more than sufficient in acceleration and passing. The Q70 is a marvelous driving machine, striking the right balance between a comfortable ride and adept handling. The Sport Touring Package’s taut suspension and active rear steering push the Q70 into BMW territory. The 20-in wheels and tires, and the firmer suspension, however, turn the Q70 into a car that enthusiasts will love. Luxury-oriented buyers will likely find it too harsh.

The 7-speed transmission can be a real bummer at times. In automatic mode, we found the Q70 to be slow to downshift, sometimes seeming as though it were taking its time trying to figure out the best gear for the rpm. We prefer the manual mode for aggressive driving.

Other Cars to Consider

Audi A6 — The A6 may be the only car with a more elegant interior than the Q70, but its base 2.0-liter turbo engine can’t match the Infiniti’s V6 in terms of hp or torque. Nothing comes close to the 5.6’s V8 power.

BMW 5 Series — The 6-cylinder 5 Series costs a bit more than the Q70, but it’s not as powerful or roomy. We also like the Q70’s interior design and layout more than that of the 5 Series.

Hyundai Equus — The Equus is the surprise player here. Although it doesn’t carry the lofty brand image portrayed by Infiniti, you get similar power and fuel economy (pound for pound), with more passenger and cargo volume. The Equus isn’t available with all-wheel drive.

Autotrader’s Advice

Driving purists with big bank accounts will likely insist on the Q70 5.6 with the Sport Touring Package, and who could blame them? For the rest of us who are looking for good performance in an elegant package that spoils its owner, we’d go for the Q70 Hybrid. The hybrid has all the comforts of the stock Q70, sacrificing only some trunk space for the battery pack. With the hybrid, you get the same performance as the gasoline-only V6, plus better fuel economy. Find a Infiniti Q70 for sale


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  1. After lot’s of testing and reading I settled on an Infiniti 3.7 Q70S AWD last May. It’s been totally reliable, uncannily quiet even with large wheels. For a big car it handles remarkably well and is very quick in Sports Mode. I generally drive in Standard and on longer trips in Economy. Fuel consumption is around 22 MPG in highway and town driving. 

    The interior is very plush, leather on the dash and door panels, good seats and a large back seat. 
    I’ve enjoyed this vastly underrated and rare car. The service experience has been brilliant at Airport Infiniti. 
  2. We more or less agree with all of AutoTrader’s comments re the Infiniti Q70. But the step up to the Sport package in either the 3.7 or 5.6 models completely transforms the car. The 3.7 S is actually better balanced than the 5.6 S, and we took cost into account when settling on the 3.7 as well. It’s big car but in the S versions handles a lot better than might be expected. And the big brakes are outstanding. We compared to Audi A5 and A6, Mercedes 250 and 350, and Jaguar XF and the yet to come XE. We didn’t look at BMWs since they are way, way overpriced for value. At the price point we settled on, the best you could do with any of these comps was cars with 2.0T engines. In short, urban show boats. Very nice, but neither fast nor particularly competent from a performance point of view. 

    We’ve noted that the Q70 carries over technology that lived in the M series, particularly the buttons on the dash. Personally, we like buttons. Why fool with a high-tech rotor and touch system that takes multiple steps to accomplish a simple task? And forget about social media delivered by the car. That’s what the Apple 6 and IPad are for. A fad which we predict will fade.
    And the Infinitis are virtually bullet-proof from a reliability point of view and the service experience is first class. 
    After considerable research, a Q70S 3.7 is sitting in the garage and we could not be happier.

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