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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.

J.D. Power study sees new car dependability problems increase for first time since 1998

For the first time since 1998, J.D. Power and Associates says its data shows that the average number of problems per 100 cars has increased. The finding is the result of the firm's much-touted annual Vehicle Dependability Study, which charts incidents of problems in new vehicle purchases over three years from 41,000 respondents.
Looking at first-owner cars from the 2011 model year, the study found an average of 133 problems per 100 cars (PP100, for short), up 6 percent from 126 PP100 in last year's study, which covered 2010 model-year vehicles. Disturbingly, the bulk of the increase is being attributed to engine and transmission problems, with a 6 PP100 boost.
Interestingly, JDP notes that "the decline in quality is particularly acute for vehicles with four-cylinder engines, where problem levels increase by nearly 10 PP100." Its findings also noticed that large diesel engines also tended to be more problematic than most five- and six-cylinder engines.

2020 Acura MDX PMC Edition coming to L.A. Auto Show

The Acura TLX PMC Edition debuted at the New York Auto Show earlier this year, the 2020 Acura MDX PMC Edition takes its turn in Los Angeles on November 20. The MDX PMC, hand-built at the Performance Manufacturing Center like the Acura NSX and TLX before it, will be limited to 330 units. The 300 examples destined for the U.S. and 30 for Canada represent 30 fewer units than the quota for the TLX PMC. That could translate into tighter demand for the MDX PMC, since the standard crossover does about 70 percent more business in the U.S. than the standard sedan. The doted-on MDX PMC follows the formula of combining Valencia Red Pearl paint with the normally-exclusive Advanced and A-Spec packages. Dark contrasts come from the body color grille surrounding gloss-black mesh, black chrome exhaust finishers, gloss-black decorating the roof, antenna, exterior mirrors, window molding, rear license plate garnish, and door handles, and gloss black 20-inch wheels. Inside is found an A-Spec steering wheel backed by metal-finished paddle shifters, black Milano leather seats with Alcantara inserts, red stitching throughout, and an individually numbered plaque identifying the build number. Extra luxury kit includes GPS-linked climate control, climate-controlled front- and second-row seats with second-row captain's chairs, and 10-speaker ELS Studio audio. The engine specs don't change, those being a 3.5-liter V6 with 290 horsepower and 267 pound-feet of torque shifting through a nine-speed automatic. Super-Handling All-Wheel Drive keeps the power in shape. When the automaker laid down a marker for the TLX PMC price, it said to expect something around $50,000, the final figure after destination coming in at $50,945. Acura says to expect the MDX PMC to figure in the "mid-$60,000 range," so don't be surprised at $66K minus some change.