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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.

eBay Find of the Day: Ayrton Senna's 1993 Honda NSX

It's not often that things owned by the late Ayrton Senna come up for sale, but the seller of this black-on-black 1993 Honda NSX (aka, Acura NSX) eBay find claims it was once owned by the Formula One legend, and that he left a footprint on the factory carpet that can still be seen today. (Footprint, or vacuum lines?...)
NSX no. T000999 was given to Senna as a gift from his mentor and sponsor, Antonio de Almeida Braga, the seller claims, and it was stored at a palace near the Estoril F1 circuit in Portugal. He also was known to drive two other NSXs, a black one and a red one - the latter in which he was seen often.
The seller claims to have owned T000999, which is still in Portugal, for 17 years, and the 31,000-mile odometer indicates it was driven about 1,500 miles per year on average. Thankfully the car has been kept stock, so whoever buys it can enjoy driving it just as Senna did - that is, if the car actually is what it's claimed to be. If the story checks out, then this is one valuable NSX, which is reflected in the high minimum starting bid of 47,500 pounds ($73,620). There have been no bids at time of writing, but with nine days left in the auction, we'll be keeping our eyes on this one.

Acura recalling nearly 20k new MDX crossovers over AWD driveshafts

Acura is recalling nearly 20,000 of its 2014 MDX crossovers fitted with all-wheel drive over driveshaft concerns. The affected vehicles were built between May 6, 2013 and October 14, 2013, and have bolts that attach the driveshaft to the transmission that may not have been tightened properly.
Needless to say, an improperly secured driveshaft could lead to a number of problems, including everything from excessive drivetrain noise to full driveshaft detachment, a condition which could result in a loss of power and crash.
There's been no reports of accidents, injuries or deaths relating to the driveshaft issues. Acura will begin notifying all 19,197 owners in question of the recall, and will request that they report in for repairs, which will consist of tightening the driveshaft-attaching bolts. Scroll down for the official bulletin from NHTSA.