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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.

Honda recalling 405K vehicles over airbag issue

Honda is in hot water due to an airbag glitch that is causing it to recall 405,400 vehicles. According to the campaign, the supplemental restraints might fire for no apparent reason. 342,000 of the affected vehicles are 2003 and 2004 Odyssey minivans, which gels with a National Highway Traffic Safety Administration investigation we reported on in June.
Joining the Odyssey in the recall is the Acura MDX, with 63,400 units covered from the 2003 model year. Unlike the van, though, the MDX's recall covers Japan and Australia, in addition to the US and Canada. Both vehicles are suffering from an airbag control unit that is prone to malfunction when exposed to electrical noise, a condition that can cause the airbags to deploy without warning. Although no crashes have been reported in such scenarios, there have been some injuries typical of airbag deployment - abrasions and such.
Honda will be mailing recall notices to owners near the end of October, asking them to bring their vehicles into the dealership for installation of an electrical noise filter. The repair will take about an hour and be free of charge. Scroll down for the official announcement from Honda.

Acura recalls 2013-2014 ILX, ILX Hybrid over fire-prone headlamps

The Acura ILX just can't seem to catch a break. The Japanese automaker recently decided that the ILX Hybrid would no longer be offered in the US for the 2015 model year. Now, a possibility for fires has also cropped up in the compact luxury sedan. Acura has announced a recall of 14,078 examples from the 2013 and 2014 model years because the headlights could overheat and ignite the car. The company also issued a stop-sale for examples still at dealers until they can be repaired.
The campaign covers ILX and ILX Hybrid models with halogen projector headlights from specific build dates. The problem is that the headlights aren't cooled sufficiently when the cars aren't moving. After several hours of sitting with them on, it's possible for the lights to build up so much heat that they melt and potentially cause a fire.
To Acura's knowledge, there was only one case of an ILX actually catching fire due to this problem, though. According to the National Highway Traffic Safety Administration defect notice, a car was idling at a dealer for about two hours when the model went up in flames. The automaker brought the vehicle in for a detailed investigation to find what caused the blaze.