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2015 Infiniti Q70

Motor Trend logo Motor Trend 4/27/2015 Stefan Ogbac

New for 2015

The 2015 Infiniti Q70's base model now comes with standard leatherette upholstery. Revised 18-inch wheels and an optional backup collision intervention system are new for the 2015 model year. Hybrid models are now available with the AroundView Monitor multi-camera parking system with moving object detection and forward emergency braking. A new long wheelbase variant is 5.9 inches longer than the standard Q70.

Vehicle Summary

Formerly known as the M37, M56 and M35h, the 2015 Infiniti Q70 is a midsize luxury sedan available in short or long wheelbases and in rear- or all-wheel-drive configurations. A hybrid version is also available but it isn't available with all-wheel drive.

Overview

Three engines are available in the 2015 Infiniti Q70: a 3.7-liter V-6 rated at 330 hp and 270 lb-ft of torque, a 5.6-liter V-8 making 420 hp and 417 lb-ft, and a 3.5-liter hybrid V-6 with a combined output of 360 hp. All three engines are mated to a seven-speed automatic transmission. Fuel economy is below average for the class with V-6 models achieving 18/26 mpg city/highway in rear-drive guise and 18/24 mpg with all-wheel-drive. Opting for the V-8 drops those numbers down to 16/24 mpg with rear-wheel drive and 16/23 mpg with all-wheel-drive. The more efficient hybrid achieves an impressive 29/34 mpg.

While its performance is decent, the Q70 isn't as sporty as competitors such as the Lexus GS and Cadillac CTS. Acceleration is brisk particularly in V-8-equipped Q70s. The added weight of the larger engine, however, hurts the car's fuel economy and handling. For those seeking a sportier Q70, a Sport Package is available with larger 20-inch wheels, sport tuned suspension and brakes, paddle shifters, and sport seats with more bolstering. There is also a drive selector that allows the driver to choose between Eco, Snow, Standard, and Sport modes.

Interior space is generous, particularly in long-wheelbase variants, which have more legroom for rear passengers. Cabin quality is good for the class with plenty of high-grade materials used including white ash sliver-powdered wood accents in the center stack, dash, and doors in cars equipped with the Deluxe Touring Package. A host of safety aids including blind spot assist, forward collision warning and emergency braking, and backup collision intervention are available. Tech and convenience features are also plenty and include Bose Studio Surround audio system, navigation, heated steering wheel, power rear sunshade, and Infiniti Connection telematics.

The available Technology package adds blind spot warning, adaptive cruise control, forward collision warning, lane departure warning, distance control assist, and forward and rear emergency braking.The 2015 Infiniti Q70 has a five-star overall safety score from the NHTSA (out of a possible five stars) and is considered a Top Safety Pick+ by the IIHS, earning a Good score in five categories (Good is the highest possible score) and offering Superior front crash prevention (front crash prevention designations include Basic, Advanced, and Superior).

What We Think

While its plush interior makes it a viable choice, the 2015 Infiniti Q70 lags behind its competitors in terms of driving dynamics. In a comparison test between four midsize luxury sedans, we said that the V-6-powered Q70, then known as the M37, was nose heavy, and suffered from "sudden off-center steering" while the engine was "loud and coarse" during acceleration runs. V-8-powered models offer better straight-line performance but we observed in a First Drive review that the extra weight of the larger engine hurts the car's driving dynamics and fuel economy.

You'll Like

  • Hybrid fuel economy
  • Roomy interior
  • Well-appointed cabin

You Won't Like

  • Unimpressive fuel economy on gas-powered Q70s
  • Sloppy handling
  • Loud V-6 engine

Key Competitors

  • BMW 5 Series
  • Mercedes-Benz E-Class
  • Audi A6
  • Lexus GS
  • Cadillac CTS

Rating2 Stars

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