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2020 Acura NSX Suspension Deep Dive

The Acura NSX has been a special car as long as I’ve been in the business. The first one came out in 1990, the same year I started my career in automotive engineering. I vividly remember driving one briefly back then when we brought one in for benchmarking. I'd drive it again 22 years later when my previous employer bought a used 1991 example for a long-term test. Reader interest was sky-high and the car was still gorgeous, but the march of time and automotive engineering had clearly left it behind. Then, in 2016, a second-generation NSX emerged, and it was packed with bleeding-edge thinking. It has a 3.5-liter twin-turbo V6, but this new NSX is a hybrid with an electric motor-generator sandwiched between the engine and its nine-speed DCT transmission. Two more electric motors – one for each wheel – power the front axle. There they can add traction, regenerate electricity under braking and dole out hyper-accurate levels of torque vectoring. The carÂ’s tire package was changed from Continental SportContact 5 to SportContact 6 tires in 2019, and numerous suspension re-tuning tweaks came along with them. The result is a lively and well-balanced car that is relentless when driven hard and a pussycat around town. LetÂ’s see what theyÂ’ve got going on under there.   At first glance the 2020 Acura NSX appears to have dual wishbone front suspension. But we canÂ’t tell for sure because that big two-piece brake rotor is in the way. The coil-over shock looks obvious, but a few odd details are apparent even from here.   This view also seems to indicate double wishbone suspension. But the pivot axis (green arrow) between the upper and lower ball joints looks wrong – itÂ’s far too vertical. WeÂ’re missing something. But I would be remiss if I failed to point out a few other things before we moved on. For one, the front drive axle confirms this to be an all-wheel-drive machine. Second, the forged aluminum damper mounting fork (yellow) that envelops the axle is mounted to the lower arm about 75% out from the armÂ’s inner pivot. The spring and damper motion ratio would be 0.75-to-1 relative to wheel movement, with a tiny reduction due to its lean angle. Lastly, just look at the huge cast aluminum upright (white). Beautiful. Normally these are called hub carriers or steering knuckles, and I use the terms interchangeably. But the motorsports-derived term upright is normally applied when the piece is tall and, well, upright like this one.   This explains everything.

2019 Acura MDX refresh brings some sharp enhancements

The outgoing Acura MDX has nothing to be ashamed of, but the thing about refreshes is that the engineers and product teams always have something to fine tune. Some of it is planned in advance — the cosmetic upgrades and the A-Spec trim were probably always part of the product roadmap. But there are also some tweaks that seem to be a response to customer feedback. Let's take a closer look. Most important, some of the goodies reserved only for the old Sport Hybrid will now be available on all MDXs. Notably, the Active Damper System — a continuously adjustable valve that controls the flow of hydraulic fluid within the damper — is available on non-hybrid MDXs for the first time. The system has several settings, from plush to firm. We found this system worked very well on the Sport Hybrid during our first drive, so it's a useful upgrade that buyers will be able to readily appreciate. Next up is an A-Spec appearance trim, which looks sportier but doesn't offer any additional performance or comfort features, just like the rest of Acura's A-Spec models at this point. For the MDX, wider 20-inch wheels and a combination of gloss black and "dark chrome" trim compliment a revised front fascia and grille. Inside, the seats get a mix of Alcantara and leather with contrasting stitching, there are unique gauges, sport pedals, and a thicker steering wheel. It looks decent enough, particularly inside, and there's enough there to make the trim stand apart from the more pedestrian trims. Oh, and there's an exclusive color: Apex Blue Pearl. A quick aside on prices: The base MDX without SH-AWD runs an MSRP of $45,295, and the A-Spec (only available with SH-AWD) is $55,795. Normal MDXs get a few more color options, although they'll cost extra: Majestic Black Pearl, Performance Red, and Canyon Bronze Metallic. One no-cost color option that's new is Gunmetal Metallic. Inside, there are some additional interior options, like Desert Olive Ash wood trim, contrasting seat stitching, and standard 4-way power lumbar adjustment on the front seats. Advance Package MDXs get wider 20-inch wheels, too. And now on to those tweaks and enhancements that might not have been planned a long time ago in a product meeting far away. The engine stop/start function has been tweaked to be smoother and quicker, thanks to an upgraded brake sensor and some software tweaks.

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.