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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.

2019 Acura RDX to race in Pikes Peak Hill Climb

Acura just launched the 2019 Acura RDX crossover, and what better way to kick things off than a little motorsport? That's right, Acura will be racing a modified RDX in none other than the Pikes Peak International Hill Climb. It's Acura's seventh consecutive year participating in the daring ascent, which sees 156 turns over the course of 12.4 miles. On June 24, the RDX will attempt the climb to the summit's elevation of 14,114 feet. To help its Exhibition Class run, the RDX's 2.0L VTEC engine has been given a larger turbocharger and an electric supercharger, which brings output up to 350 horsepower and 330 pound-feet of torque. The vehicle also benefits from race-tuned suspension, custom 19-inch wheels and Pirelli racing tires, and front Brembo brakes. Behind the wheel will be by Jordan Guitar of Acura R&D's North American Chassis Development Group. The RDX will be joined at the race by three other Acuras: a production-based NSX competing in the Time Attack 1 Class, and two TLXs in the Open Class. One is a TLX A-Spec with an upgraded suspension and 500-horsepower turbo V6. The other is a TLX GT with a modified twin-turbo V6 and suspension developed specifically for Pikes Peak. Related Video:

Acura TLX sales stopped over rollaway fears

A bad indicator that could convince customers that affected cars are in park, even when they aren't, has pushed Acura to issue a stop-sale for the V6-equipped TLX sedan. The company has already alerted the National Highway Traffic Safety Administration of the potential safety defect. According to Consumer Reports, the defect is being blamed on unnamed transmission components in the nine-speed-automatic transmissions, which were damaged during assembly. A representative from Acura confirmed to CR that a more complete statement would be coming once the case can be reviewed by NHTSA. At this point, this case isn't a full recall, although it seems quite likely that's the direction it will take. Stay tuned for more.