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Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

Nissan Xterra's fate hangs in the balance

The Nissan Xterra might not be long for this world, according to a report from Edmunds. The rugged SUV, which has always been a bit more of a hardcore, purpose-built vehicle than the rest of the Nissan SUV range. But it has also suffered from slowing sales, low fuel economy relative to the competition and general neglect, as Nissan has focused on other offerings in its range.
"There are plans to replace it, there are always plans, (but) I am not sure it will happen. I would say in the next six months to a year," Pierre Loing, vice president of product planning for Nissan Americas told Edmunds. Part of the problem, he added, was that the Xterra is a US-only vehicle, which makes it a hard sell in a world where automakers are increasingly depending on global cars.
Besides the economic forces working against the Xterra, it's just a vehicle that hasn't been a huge sales success of late. Customers are more conscious of fuel economy and a body-on-frame SUV that only nets 16 miles per gallon just isn't good enough; arguably why Nissan barely sold 17,000 units last year. We can hold out hope, as the Xterra remains a fun off-roader that we'd hate to see go, but unless Nissan finds a business case or some global partners, this is a vehicle that is on its last leg.

GM, Ford, Honda winners in 'Car Wars' study as industry growth continues

General Motors' plans to aggressively refresh its product lineup will pay off in the next four years with strong market share and sales, according to an influential report released Tuesday. Ford, Honda, and FCA are all poised to show similar gains as the auto industry is expected to remain healthy through the rest of the decade. The Bank of America Merrill Lynch study, called Car Wars, analyzes automakers' future product plans for the next four model years. By 2020, 88 percent of GM's sales will come from newly launched products, which puts it slightly ahead of Ford's 86-percent estimate. Honda (85 percent) and FCA (84 percent) follow. The industry average is 81 percent. Toyota checks in just below the industry average at 79 percent, with Nissan trailing at 76 percent. Car Wars' premise is: automakers that continually launch new products are in a better position to grow sales and market share, while companies that roll out lightly updated models are vulnerable to shifting consumer tastes. Though Detroit and Honda grade out well in the study, many major automakers are clumped together, which means large market-share swings are less likely in the coming years. Bank of America Merrill Lynch predicts the industry will top out with 20 million sales in 2018 and then taper off, perhaps as much as 30 percent by 2026. Not surprisingly, trucks, sport utility vehicles and crossovers will be the key battlefield in the next few years, Car Wars says. FCA will launch a critical salvo in 2018 with a new Ram 1500, followed by new generations of the Chevy Silverado and GMC Sierra in 2019, and then Ford's F-150 for 2020, according to the study. Bank of America Merrill Lynch analyst John Murphy said the GM trucks could be pulled ahead even earlier to 2018, prompting Ford to respond. "This focus on crossovers and trucks is a great thing for the industry," Murphy said. Cars Wars looks at Korean (76 percent replacement rate) and European companies more vaguely (70 percent), but argues their slower product cadence and lineups with fewer trucks puts them in weaker positions than their competitors through 2020. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Featured Gallery 2016 Chevrolet Silverado View 11 Photos Image Credit: Chevrolet Earnings/Financials Chrysler Fiat Ford GM Honda Nissan Toyota study FCA