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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 Luggage Test | Perfectly reasonable trunk space

The Acura TLX has a 13.5-cubic-foot trunk according to the spec sheet. That would be comparable to a typical compact mainstream sedan despite the TLX's exterior dimensions being more akin to a midsize sedan (its 194.6-inch length is right smack between a Toyota Camry and Honda Accord). Luxury cars usually sacrifice utility for style, and by adapting cab-rearward proportions for this latest generation, it shouldn't be surprising that the TLX follows the trend.  However, how much utility does the new TLX sacrifice and is the trunk still useful? Let's find out. It's a fairly deep space, but the amount of width and space behind the wheel wells is also reasonably generous and seemingly useful. As with every luggage test, I use two midsize roller suitcases that would need to be checked in at the airport (26 inches long, 16 wide, 11 deep), two roll-aboard suitcases that just barely fit in the overhead (24L x 15W x 10D), and one smaller roll-aboard that fits easily (23L x 15W x 10D). I also include my wife's fancy overnight bag just to spruce things up a bit (21L x 12W x 12D).  To start off, I lined the biggest bags on their sides to demonstrate the difference in the trunk's width relative other sedans. Only three can fit, whereas you can fit four in the majority of midsize sedans. Nevertheless, all the bags fit. That's not the case with the Cadillac CT4 or CT5, or the big fibber, the BMW 3 Series and its "17-cubic-foot" trunk.  Basically, the numbers make sense here. While it can hold all the bags, there really isn't any leftover space as there is in a midsize sedan. That said, I should note that there are plenty of compact crossovers that can't fit all these bags below their cargo covers, including the Mercedes GLC and Alfa Stelvio.  OK, one more trunk-related note. While there is a spare-tire-shaped hole under the trunk floor, there is no spare tire. Instead, you get a compressor encased in foam covering the car's battery. Putting the battery in the trunk is totally normal, but there's something a tad bootleg about this placement. It seems like an afterthought. It almost certainly has to do with engine compartment packaging and/or weight distribution, but it does mean you do without a spare tire. Or, I suppose as BMW is apt to do, extra under-floor cargo space.  Related Content  

2015 Acura NSX burns to the ground at the 'Ring [w/video]

Assuming all goes to plan, automakers test their vehicles to the breaking point in the months and years leading up to that vehicle's actual release into the public. Which is good, because it's much better for a car to break in glorious fashion in the hands of the company that produces it than in the driveway of an owner who just spent their hard-earned cash to get it. Such was the case with this production-guise Acura NSX prototype that we saw running around the Nurburgring just the other day. We can't be 100-percent certain, but the burned-out carcass is wearing the same number plate as the car that was spotted earlier, so it's likely the very same NSX. We have no idea what was the cause of the blaze that turned this Acura into the car-b-q you see pictured above, but our spy shooters on the ground in Germany say it was not involved in any collision, having caught on fire all on its own with engineers behind the wheel. The good news is that nobody was hurt, though the car is quite clearly a complete loss. We're sure there's another ready to to test in the burned car's place... just as soon as the engineers at Honda figure out exactly what went wrong. Have a look at the smoldering aftermath up above, and feel free to scroll down below to see a video of the car in much better circumstances.