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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.

Hyundai, Kia, Genesis and Subaru clean up in IIHS 2018 safety ratings

Hyundai, its partner Kia and its Genesis division are the big winners in the latest vehicle safety ratings from the Insurance Institute for Highway Safety, accounting for six of the 15 models that earned the Top Safety Pick+ awards for 2018. Subaru was right behind with four, Mercedes-Benz had two, and Toyota, BMW and Ford each had one. Another 47 vehicles earned the Top Safety Pick designation, where Toyota had 10 vehicle models, with Hyundai recognized for nine models. All but one of the seven vehicles in Subaru's lineup, the BRZ, qualified for one of the awards. IIHS strengthened the criteria for the Top Safety Pick+ award for 2018 to require headlights to earn a "good" rating — an "acceptable" rating was previously enough to notch the "plus" award — and good or acceptable passenger-side protection in the small overlap front crash, which replicates a crash involving just the front corner of a vehicle. It also required vehicles to have acceptable or good headlights for the first time to earn a Top Safety Pick award. Most of winners for both awards qualified on the basis of optional upgrades. IIHS in October began evaluating the passenger side of vehicles in its small overlap front crash test after it said it became clear that automakers were neglecting that side of the vehicle as they focused on improving driver-side protections. IIHS first began conducting driver-side small overlap crashes in 2012. It began measuring both how well low and high beams illuminated the road and the amount of glare they produce for oncoming vehicles as part of its ratings in 2016. The Top Safety Pick+ winners are listed below. The list doesn't include any minivans, pickups or minicars, which don't appear on either list of awardees. Small cars Kia Forte Kia Soul Subaru Impreza (sedan and wagon) Subaru WRX Midsize cars Subaru Legacy Subaru Outback Toyota Camry Large luxury cars BMW 5 series Genesis G80 Genesis G90 Lincoln Continental Mercedes-Benz E-Class sedan Midsize SUVs Hyundai Santa Fe Hyundai Santa Fe Sport Midsize luxury SUV Mercedes-Benz GLC The full list of Top Safety Pick winners is available here.Related Video: Image Credit: IIHS BMW Genesis Hyundai Kia Lincoln Subaru Toyota Safety Crossover SUV Wagon Sedan crash test

2019 BMW M850i xDrive: How it compares on paper with other GT coupes

Although the hot new vehicles for the rich seem to mainly comprise SUVs and supercars, the neglected luxury GT coupe segment is starting to see some life again. The latest to add a spark to this set is the 2019 BMW M850i xDrive. It goes on sale later this year, and revives the 8 Series that's been dead since the 1990s. The first version available to Americans will be one with a twin-turbo 4.4-liter V8, with other versions likely following. Before it launches, we wanted to get a lay of the grand-touring land and see how the new BMW stacks up to the competition in performance, practicality and price. While some of these models have higher-performance or more-affordable iterations, we picked the versions that would be the closest match to this 8 Series model. They include the 2019 Lexus LC 500, 2018 Mercedes-Benz SL 550, 2018 Mercedes-Benz S 560 Coupe and the 2018 Maserati GranTurismo. We will also provide some short summaries on our experiences with these cars, but to get a full picture of each model, be sure to check out their full reviews. And if you want to compare any of these cars with models you don't see here, be sure to try out our car comparison tool. Engines, transmissions and performance On paper, the BMW M850i xDrive is clearly the performer of the group. It has the most power and torque at 523 horsepower and 553 pound-feet. Coupled with all-wheel-drive and an eight-speed automatic, the car is able to overcome its relatively portly 4,478-pound curb weight to hit 60 mph in a scant 3.6 seconds. That's more than half a second quicker than the lightest car in the group, the Mercedes-Benz SL550, which weighs 4,012 pounds. The other three vehicles are in the low- to mid-4-second range to 60 mph. Though the Maserati is the slowest to 60 mph, it does boast the highest top speed of 186 mph. The M850i and SL 550 are electronically limited to 155 mph, while the Lexus is limited to 168 mph. The Mercedes S 560 has the lowest top speed at an electronically limited 130 mph. View 52 Photos Of interest is that there's a 50/50 split among these cars between using a pair of turbos, and having none at all. The BMW and Mercedes resort to forced induction, whereas the Lexus and Maserati choose to stay naturally aspirated. This is likely why the Germans break 500 pound-feet of torque, while the others don't make it to 400. Also interesting is the spread of gear quantity. The Maserati has just six ratios to choose from, and the Lexus has a whopping 10.