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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.

Porsche ready to pick itself up after Le Mans failure

It's safe to say that things for Porsche didn't go quite as well at Le Mans this year as it might have hoped. After a sixteen-year gap, the winningest manufacturer in endurance racing history returned to the Circuit de la Sarthe this year hoping maybe not for outright victory in its first time back, but definitely a strong finish on which it could build on for next year. All the while it undoubtedly hoped its 911s would hold their own in the GT classes.
Unfortunately for Porsche, neither happened. After racing around the clock, and despite actually leading the festivities for some time, the best its 919 Hybrid could manage was an eleventh-place finish, lagging lamentably behind not only the other LMP1s (like the race-winning Audi) but also a handful of LMP2s. Meanwhile the LMGTE Pro and LMGTE Am titles went to the factory-backed teams of its arch-rivals Ferrari and Aston Martin, respectively.
Not a stellar result, in other words, but Porsche is taking it all in stride - accepting that it has a ways to go while congratulating its vanquishing rivals in the video below. It's good sportsmanship if we've ever seen it. Next year's race starts now.

Kia leads J.D. Power's Vehicle Dependability Study for 2022

For the first year ever, Kia leads J.D. Power's annual Vehicle Dependability Study with a score of 145 problems per 100 vehicles. Buick (147) and Hyundai (148) round out the top three. The highest premium brand on the list is Genesis, with a score of 148. It's common for so-called "mass market" brands to lead this particular study, according to J.D. Power, as "premium" brands "typically incorporate more technology in their vehicles, which increases the likelihood for problems to occur" and aren't necessarily built to a higher standard that less-expensive brands. The highest-rated single nameplate is the Porsche 911. It's the third time out of the past four years and the second year in a row that Porsche's quintessential sports car has taken top honors. Porsche as a brand sits in seventh place (162) just behind Lexus (159) and ahead of Dodge (166). At the very bottom of the list is Land Rover with a dismal score of 284; the SUV specialist held the same unfortunate distinction on last year's list. Ram (266), Volvo (256), Alfa Romeo (245) and Acura (244) also performed poorly. The overall industry average score sits at 192 — mass market brands average a score of 190 while premium brands sit 14 points lower at 204. While Tesla is unofficially included in some of J.D. Power's results, the agency says the sample size it has access to for this study is too small to include. As has been the case for the past several years, infotainment systems dominate the list of problems reported by owners. Popular (or unpopular, depending on your point of view) complaints include built-in voice recognition (8.3 PP100), Android Auto/Apple CarPlay connectivity (5.4 PP100), built-in Bluetooth system (4.5 PP100), not enough power plugs/USB ports (4.2 PP100), navigation systems difficult to understand/use (3.7 PP100), touchscreen/display screen (3.6 PP100), and navigation system inaccurate/outdated map (3.6 PP100). While problems with the car's infotainment and technology packages are indeed bothersome, it's important to remember that such issues aren't usually leaving owners stranded with an immovable vehicle like a broken transmission or blown engine would. Culling infotainment complaints from the results would reduce the average problem-per-100-vehicle score by a staggering 51.9 points. The vehicles included in this study are from the 2019 model year. That means owners have had three years to get to know their cars and trucks. It's the 33rd year that J.D.