The Infiniti QX56 was completely redesigned for the 2011 model year and is lower and wider than the outgoing truck. The 2012 Infiniti QX56 truck that we’ll be testing here in Denver comes in all-wheel-drive with an ALL-Mode 4WD system controlled by a wheel on the console.
The four-wheel-drive selector switch on the console offers automatic, four-wheel-drive high, four-wheel-drive low, low lock, tow mode and snow mode. The auto mode moves engine power back and forth between front and rear axles and up to 100 percent in the rear, but no higher than 50 percent front. This offers excellent traction and a must for Denver commuters.
The 5.6-liter, 32-valve, double overhead-cam V-8 engine, is fitted with the latest direct fuel injection and variable valve timing and lift. The V-8 powerplant produces 400 horsepower and 413 foot-pounds of torque, and figures very close to the power and torque of the high-performance M56 sedan, and almost 25 percent more power than the previous engine, with a 14-percent improvement in fuel economy. With 4WD, the QX56 gets 14/20 city/highway fuel economy.
The 2012 QX56 powertrain features a seven-speed double overdrive transmission to provide first-gear acceleration for the 5600-pound truck. The seven-speed automatic transmission has adaptive shifting to match each driver's driving style, with manual shift override, including a sporty throttle-blip provided on manual downshifts.
The platform underneath features an optional feature that no other truck in the class offers. A unique closed hydraulic circuit connects all four suspension units and moves hydraulic pressure from front to back and side to side as the truck moves, keeping the body from leaning over in corners.
The 2012 QX56 is more than just a pretty face. For a heavy truck that weighs in at almost 5900 pounds, the QX56 responds to its 5.6-liter V-8 engine. Under full throttle with no passengers or cargo, acceleration is very strong. But the QX56 4WD is built for low-end torque which is good for hauling and pulling a trailer and is perfect for Denver’s higher altitude and terrain.
Inside, the ride is incredibly quiet and comfortable. The body movements over the suspension are well controlled and there is very little body roll or wallow, even in tight fast corners. The hydraulic body motion control system works just as advertised.
Click here and we’ll give a full report on the 2012 Infiniti QX56.
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