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A smoother operator | 2017 Acura MDX Sport Hybrid First Drive

There's a lot to unpack when trying to understand the 2017 Acura MDX Sport Hybrid. Acura is billing it as a three-row crossover infused with NSX technology via a sport-oriented hybrid drivetrain. So it's a hybrid crossover, sure. But it doesn't comport itself like a traditional crossover, nor is it a conventional hybrid. What it is, underneath, is an intentionally subtle blend of impressive technologies doing their best to appear transparent – and it's too subtle, I fear, to be appreciated by those who'd like it the most. This is a lot of foreshadowing, but if you're not familiar with the MDX Sport Hybrid's powertrain, let's fill you in. The MDX Sport Hybrid uses the same basic system as the 2014 RLX Sport Hybrid, with some newer NSX battery tech sprinkled in, packaged neatly into the refreshed third-generation MDX platform. The system improves handling and efficiency – but more important, it smoothes out the harshness of shifts and engine stop-starts. We do need to examine the system in some detail to understand how all this affects the MDX as a whole, so let's go toe to tail. Up front is a transversely-mounted 3.0-liter V6 making 257 horsepower and 218 pound-feet of torque, as well as featuring i-VTEC and cylinder deactivation. It's slightly smaller than the 3.5-liter V6 found in the conventional MDX and many other Honda and Acura products. Attached alongside is a Honda-produced 7-speed dual-clutch transmission that has a 47 hp, 109 lb-ft electric motor-generator stuffed inside. Amidships are the battery pack and the electronics to control it, and stretching aft from there are large cables feeding power to a pair of electric motors that reside in single housing, one for each wheel. Together, they produce electron witchcraft and torque-delivery wizardry – and add 72 hp and 108 lb-ft of torque to the mix. The total system output is 321 hp and 289 lb-ft of torque – a gain of 31 hp and 22 lb-ft over the conventional MDX SH-AWD. Beyond the raw numbers, there's the remarkable subjective benefit of the Sport Hybrid's drivetrain. Engine start-stop events are quiet and smooth, nearly imperceptible when under way – in stark contrast to the too-perceptible shudder of competing engines kicking on. The electric motors (mainly the one residing in the transmission) add in power to make up for the lull during a shift, making shifts up or down seamless, as well as providing regenerative capacity.

Acura TLX GT Racecar bringing the 'X factor' to Pirelli World Challenge

One doesn't normally think of Acura offering anything to mix it up with the SRT Viper, Lamborghini Gallardo, Mercedes-Benz SLS AMG, Nissan GT-R, Audi R8 and Ferrari 458 Italia (at least while the NSX is still off in the ether), but that's exactly what's about to happen. Honda's premium outpost is jumping into the top tier of the Pirelli World Challenge with this 2015 TLX GT.
The surprise reveal of this racecar at today's Detroit Auto Show will be campaigned by RealTime Racing, no stranger to racing Acuras, in the GT class (previously, the team had campaigned the series a rung down in GT-S).
The racecar is powered by a twin-turbo variant of the direct-injected V6 to be found in the production TLX sedan, right along with its Super-Handling All-Wheel Drive system. There's no word on how much power this HPD-massaged engine will put out in race trim, but we won't have to wait long to hear it fire up - the car is set to take to the track with team owner Peter Cunningham at the wheel in the next few weeks.

Acura doesn't have plans for a new MDX hybrid

Besides an entirely new platform, suspension, and a turbocharged Type S model coming soon, the 2022 Acura MDX is new in another way: it seems to be losing its hybrid trim level. During a media roundtable, Acura's global development lead confirmed that there are no plans for a hybrid version of the new MDX. Part of the reason for the lack of a hybrid for the new MDX is the aforementioned Type S model. The Acura development lead noted that the outgoing MDX Sport Hybrid is the current sporty, high-output version of the crossover. That mantle is now being taken over by the Type S with its turbocharged 3.0-liter V6. The new Type S makes 355 horsepower and 355 pound-feet of torque, which also represents a large power increase over the Sport Hybrid's 321 horsepower and 289 pound-feet. The Type S won't be able to do everything the Sport Hybrid could do, though. While official fuel economy numbers haven't been revealed, we're confident the Type S won't be able to hit the 27 mpg combined of the hybrid. The Sport Hybrid's powertrain was also quite interesting, as it combined its 3.0-liter naturally aspirated V6 with a trio of electric motors. A single motor worked in conjunction with the engine to power the front wheels, and one motor each powered the rear wheels and provided torque vectoring. It was sort of like a backwards NSX. While Acura doesn't have plans for a hybrid right now, it is possible the brand could change its mind. And in an ever electrifying world, it would be surprising if we never saw a hybrid MDX return. Related Video: