2017 Acura MDX Sport Hybrid - Nearly two decades after the Honda Insight introduced hybrids to America, the technology is still rare among crossovers. That could be because blending crossover and hybrid genes usually begets mediocrity.
In exchange for a few more mpg, you get a heavier, lazier family hauler that’s no fun to drive. Credit Acura for upending that paradigm. The MDX Sport Hybrid SH-AWD tested here imbues Acura’s recently facelifted three-row crossover with hybrid components similar to those from the NSX supercar, and the result is a breakthrough vehicle, one that actually deserves the Sport in its name.
A transversely mounted 3.0-liter V-6 rated at 257 horsepower powers this MDX’s front wheels through a seven-speed dual-clutch automatic. A 47-hp electric motor/generator geared to the transaxle assists by cranking the engine, providing supplemental thrust, and charging the 1.3-kWh lithium-ion battery pack located under the front seats.
What Acura calls a Twin Motor Unit (TMU) lives between the rear wheels, kicking in another 72 horsepower on demand. Identical in most respects to the double motor package that energizes the Acura NSX supercar’s front wheels, the TMU serves as a smart differential. During gentle launches, each motor drives one rear wheel while the engine naps.
To augment cornering vigor, one motor powers the outside rear wheel while the other slows the inside, a clever version of torque vectoring. During those differential moments, the impeding motor sends electrical current to the battery pack. The lack of a driveshaft between the axles leaves ample room under the floor for a 72-cell battery pack and a power-control unit.
The former is cooled by cabin air, the latter by circulating liquid. Thanks to careful packaging, the hybrid’s 15-cube cargo hold matches that of the front-drive, gas-only MDX, and there is only one cubic foot less of passenger volume.
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Source : http://www.caranddriver.com/reviews/2...
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