New & Used Infiniti Q70: In Depth
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The Infiniti Q70 is a large, four-door, sport sedan, the biggest car the automaker fields. Until 2014, the Q70 was known as the Infiniti M. Now renamed but essentially the same car, it continues to compete with the BMW 5-Series, Audi A6, Jaguar XF, Lexus GS, Mercedes-Benz E-Class, and, in some cases, the Acura RLX, too. The company's new naming system is bound to generate confusion for a few years more. (Check out our story on Infiniti's naming strategy to find out more about these changes to the brand's lineup.)
As offered today, the Q70 emphasizes driving performance more than some of its competitors, while still maintaining a luxurious feel. Today's Q70 debuted as the third-generation Infiniti M at the 2009 Los Angeles Auto Show, and went on sale in Spring 2010.
The car was previewed by a stunning concept sedan, the Infiniti Essence, that revealed styling themes and a design language for the brand going forward. The flowing lines helped to boost the car's profile among the crowded set of traditional luxury competitors, which was then expanding with the addition of the similarly expressive Jaguar XF.
When this generation launched, it offered two engines. What was then called the M37 (now the Q70 3.7) packs a 3.7-liter V-6 and is pretty quick on its feet, although it is noisier than its pricier counterpart. For a little extra cash, the Q70 5.6 offers a 5.6-liter V-8 with a 0-to-60 time of about 5 seconds, which is very fleet for a standard series-production sedan not wearing a performance label. Although it's starting to get up there in terms of age, we've always enjoyed this model's smooth V-8 engine.
The styling has always looked handsome and is aging well itself. The big back seat, fine handling, communicative steering, and balanced ride also win the Q70 praise. As for the interior, fit and finish are dialed in, and the optional silver-hued wood trim is especially attractive.
All-wheel drive can be ordered on the V-6 (nee M37) and V-8 (nee M56) models of the Infiniti Q70. A Sport Package is available on both rear-wheel-drive and AWD models and adds 20-inch wheels and performance tires, upgraded brakes, and a number of appearance enhancements.
The Q70 Hybrid (which was introduced for 2012 as the M35h) pairs a performance-oriented single-motor hybrid system to a 3.5-liter V-6 engine. The combination puts out 360 hp, but gets an EPA combined rating that now sits at 31 mpg (29 mpg city, 34 mpg highway). (The rating was updated for 2014 when it was increased by 2 mpg.) Unlike many hybrids, this model manages to mix fuel efficiency with driving fun. Its steering and dynamics are almost as good as those of the rest of the range, and the boost in gas mileage--the V-8 with rear-wheel drive is rated at just 19 mpg combined--is a strong case for considering the hybrid Q70. In some situations, however, it is not the most seamless of hybrids, as the engine's starting and stopping can be felt very acutely. This is in some part due to the way the hybrid transmission is designed and is a trade-off to the more direct feel offered.
For 2015, the Q70 gets an extended-wheelbase version. This model, called Q70L, adds about five inches of rear legroom and seven inches to the overall length. All Q70s get a mild freshening this year as well, with revised lighting elements at both ends. The powertrains carry over and include the hybrid, V-6, and V-8, although only the non-hybrid versions are available in the Q70L.
Infiniti showed a Q70L Bespoke Edition concept at the 2015 Shanghai show, which is outfitted with an upgraded interior meant to bridge the gap between production Infiniti interiors and those in its concept cars. The cabin has individual rear seats separated by a console and covered in white quilted leather, while the headliner is done in a black quilted design. This likely signals a higher interior spec that will be available on Q70s and other Infiniti models in the future.
The Q70 represents the third generation of the mid-size Infiniti sedan, with earlier generations of the Infiniti M having launched in 2003 and 2006.