Infiniti QX70 Performance
With its responsive V6 engine, quick steering and athletic handling, test drivers agree that the 2015 Infiniti QX70 is one of the more dynamic SUVs in the class. However, some report that the compromise for nimble handling is a firm ride.
- "Sleek, low and fast, the QX70 is still one of the best driving luxury SUVs around, though it has lost some of its mojo with the deletion of the 5.0-liter V8 engine." -- Kelley Blue Book
- "Sometimes, you can judge a book by its cover - the QX70's aggressive stance and muscular lines suggest that this crossover is all about performance, and it certainly has all the right stuff under the sheetmetal to back up that impression." -- Left Lane News
- "Calling the QX70 a sport sedan on stilts wouldn't be far from the truth. Underneath, the QX70 shares its platform with the athletic-handling Infiniti Q50 sedan (the formerly named G37), yielding a nimble character that few crossovers can match." -- Edmunds (2014)
- "The good news is the powerplant's power. In the FX37, it makes 325 horsepower and 267 lb-ft of torque without turbos. The bad news is it's coarse and unrefined. Push hard, and a faint vibration occurs in the shifter, steering wheel, and pedals." -- Car and Driver (2013)
Acceleration and Power
The 2015 Infiniti QX70 comes with a 3.7-liter V6 that produces 325 horsepower, as well as a seven-speed automatic transmission. The V8 engine that was available on the 2014 model has been discontinued for 2015. The QX70 gets up to an EPA-estimated 17/24 mpg city/highway, which is slightly low for the class.
Reviewers write that the QX70’s V6 engine is powerful and refined, and that with the exception of a pleasing exhaust note, it operates quietly. Some critics say that the QX70’s transmission can be slow to downshift in some situations. However, others say that the transmission is responsive, and downshifts quickly when more power is needed.
- "The 7-speed automatic's paddle shifters and automated rev-matching work wonders, allowing us to circumvent the automatic's computer-controlled module that sometimes seems slow to downshift." -- AutoTrader
- "The 3.7-liter V6 is one of the best engines Nissan has ever produced and it's put to good use in the QX70. Smooth and quiet, but with just enough growl at the exhaust tips to be menacing, this engine delivers impressive power and decent fuel economy." -- Kelley Blue Book
- "The base V6 delivers a smooth stream of power that's more than adequate for a vehicle of this type." -- Edmunds (2014)
- "The seven-speed automatic also delivers quick downshifts when necessary and remains unobtrusive in normal driving, serving up smooth transitions between its numerous gears." -- Autoblog (2013)
Handling and Braking
The base Infiniti QX70 has rear-wheel drive, while all-wheel drive is optional. Features that were available last year, such as active rear steering and an adaptive suspension system, are no longer available. Auto writers report that the 2015 QX70 offers particularly agile handling for the class, and that its quick, accurate steering and small turning circle make it particularly poised on a winding road. They note that the QX70 rides firmly, especially when equipped with larger 21-inch wheels, but most agree that it’s still fairly comfortable at speed. However, a few write that the QX70’s highway ride can be a little harsh.
- "If you're lucky enough to test drive the 2015 Infiniti QX70 on a winding mountain road, you'll learn all you need to know about why this is the driving enthusiast's luxury SUV. The QX70's well-balanced chassis, tight turning radius and wide stance allow it to round curves that would have other SUVs teetering on their sidewalls." -- AutoTrader
- "Infiniti's QX70 for 2015 doesn't drive like most luxury SUVs. That's because Infiniti has engineered a near 50/50 weight distribution for the QX70, coupled to an all-independent suspension and numerous traction and stability systems. The ride is a bit on the firm side, especially when fitted with the optional 21-inch wheels, but its not annoyingly harsh and the return on level cornering and aggressive turn-in is well worth the tradeoff." -- Kelley Blue Book
- "Underpinned by a version of the RWD-based architecture used by the 370Z, the QX70 offers crisp responses to control inputs along with a taut - but not uncomfortable - ride." -- Left Lane News
- "On twisting roads, the QX70 displays impressive road-holding prowess and confidence, aided by consistent brakes and a tight, direct steering feel. The trade-off, however, is a stiffer ride on the highway." -- Edmunds (2014)