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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.

4.5 million Hondas, Acuras are being recalled worldwide to fix a fuel pump defect

Honda is recalling more than 4.5 million cars worldwide because of a fuel pump problem that could lead to engine failure or stalling in traffic, which could cause an accident. The recall includes 2.54 million vehicles in the United States. The automaker had previously recalled 628,000 U.S. vehicles in 2021 and 136,000 in 2020 for the same issue. Honda issued recalls over the same issue earlier this month in China and Japan. National Highway Traffic Safety Administration recall documents say the impellers inside fuel pumps of 2017-2020 Hondas and Acuras were improperly made, meaning they “can deform and interfere with the fuel pump body” over time. This could prevent the engine from starting, or can cause a stall while driving, which depending on the situation in traffic, could be dangerous. Fortunately, Honda says it hasn't received any reports of crashes or injuries. To remedy the problem, Honda will replace the in-tank fuel pumps, at no cost to owners, in the entire U.S. recall population of 2,539,902 vehicles, though the defect may be present in only 1 percent of those cars. Because of the size of the recall, repairs will be done in phases, with first owners receiving notification letters in February. Dealer notifications began this week. “Countermeasure replacement parts are not available in sufficient quantities for all recalled vehicles at the time of this announcement, and American Honda intends to notify vehicle owners in stages," Honda wrote. Meanwhile, owners wishing to confirm that their vehicle is included can enter their VIN at the NHTSA recall site or at American Honda's and Acura's recall platforms.  NHTSA's campaign number for the recall is 23V858000. Honda's numbers for this recall are KGC and KGD. Owners may also contact Honda customer service by phone: 1-888-234-2138.

Precision Concept previews the future of Acura design [w/video]

When we drove the 2014 Acura RLX Sport Hybrid two years ago we celebrated its massive handling and carped on its milquetoast styling. We'd have done backflips if the internals of the brand's flagship sedan had been wrapped in the sheetmetal of the Acura Precision Concept. Don't get us wrong, we still have some questions about the front end of the car in these images, but we're all-in on the side view and, more importantly, we applaud Acura for making a bold design statement. Acura says the Precision concept "literally will shape the direction of all future Acura products," bringing a "bolder, more distinctive future for Acura vehicle design." Hallelujah. As if you couldn't tell, this is the product of the Acura Design Studio in California, where Acura NSX veteran Michelle Christensen led the exterior work and NSX veteran John Norman led the interior design. Up front is what's called a Diamond Pentagon grille, which looks fussy here but we won't make final judgments until we see it on the Detroit Auto Show floor later today. Come around to the side and the low-slung, rear-wheel-drive proportions on 22-inch wheels are the last thing we'd expect from a design study for an Acura sedan. It is about two inches shorter than the 2016 BMW 750i with a wheelbase that is 4.4 inches shorter, and sits six inches lower. Intensely sculpted surfaces flow from the exterior into the cabin, like the CHMSL that breaks the rear backlight to roll into the rear headrests. Interior elements thrust like geologic formations, popping with mixed materials, floating rear seats, a small steering wheel and floating gauge locked onto a tiered instrument panel. The wide, curved screen atop the center console experiments with a floating touchpad to control a concept human-machine interface. Acura says everything about the Precision concept is an expression of the company's "Precision Crafted Performance DNA." We have no idea how Acura plans to integrate this into its product line; put the Precision on a showroom floor right now and every other current Acura model save the NSX would squeal away and hide. But we welcome the attempt. We can't wait to see what happens. Acura Precision Concept Points to Bold Future for Acura Design DETROIT, January 12, 2016 – The Acura Precision Concept model made its world debut at the 2016 North American International Auto Show today, pointing toward a bolder, more distinctive future for Acura vehicle design.