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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.

2016 BMW 7 Series First Drive [w/video]

Flagships demonstrate strength. "This is what we can do," these cars say with emphasis. Since 1977, the 7 Series has been a rolling showcase of BMW's capability. Sure, BMW makes racecars, but the mighty 7 is a proud reminder that the Roundel also stands for luxury. Except the 7 Series has been eclipsed by the Mercedes-Benz S-Class, a technological tour de force that Mercedes haughtily calls the industry's flagship. BMW makes a pretty nice car, but no one would dare call it that. Bimmer should probably just lower the flag, right? Not yet. Most of history's famous flagships have been fighting machines. They exude confidence, but also pack a punch. And with the 2016 7 Series, BMW is unleashing a broadside on Mercedes and the rest of the industry. Rather than raw power, the sixth generation of the iconic 7 Series is loaded with sophisticated technology that makes the new sedan more luxurious and comfortable. While it looks familiar from the outside, most of the improvements are in the cabin or under the skin. Things like the carbon fiber used for the passenger cell that help the 7 Series shed 190 pounds compared to its predecessor. Or the touchless gesture control that allows you to accept or decline phone calls with simple hand motions. Even the infotainment system is better, with a pinch-to-zoom feature that makes iDrive less confusing and more like the user-friendly iPad. BMW is unleashing a broadside on Mercedes and the rest of the industry. It's a lot of high tech stuff, but the driving experience is still the top priority for BMW. To test its mettle, we traveled to the Monticello Motor Club in rural New York. After several hot laps on the road course (more on that later) we slip behind the wheel of an Arctic Gray Metallic 750i xDrive for some public road driving. The big sedan immediately masks its size on the twisting rural state routes. With 445 twin-turbo V8 horsepower urging us forward, we barrel ahead as the countryside blurs by. Once we settle into a relaxed, legal pace and get our bearings inside the car, we check out some of the new tech. The gesture control is easy to activate while driving, and with a twirl of a finger we turn up the silky-sounding Bowers & Wilkins system. Gestures actually work as advertised. No one calls us, but during an earlier demonstration we were able to decline a call with a dismissive backhand. It felt good.

BMW says X5 xDrive40e PHEV will get 55 MPGe

This is one vehicle that Sammy Hagar can actually drive 55. Miles on the equivalent of a gallon of gas, that is. BMW has starting talking about details of its first-ever production plug-in hybrid CUV, and the latest are centered on the model's projected miles per gallon-equivalent figure. Bimmer is now saying the its X5 xDrive40e PHEV will get a robust 55 MPGe on the US EPA scale (on the European scale, the vehicle's expected 77 or 78 grams of CO2 per kilometer would translate to around 70 mpg). The model, which pairs 2.0-liter twin-turbo four-cylinder engine with an electric motor, will be able to go as far as 13 miles on electricity alone, and also hit 75 miles per hour using just the battery. BMW first unveiled the model at the Frankfurt Motor Show in 2013. The CUV, which will have full-time all-wheel drive, will have some guts, too. The model will deliver 308 horsepower, including 111 from the electric motor alone. As a result, the X5 xDrive40e will be able to scoot from 0-60 miles per hour in 6.5 seconds. Not exactly Tesla Model S quick, but peppy nevertheless. US and European sales for the model-year 2016 version will start this fall. The model will be produced at the company's plant in Spartanburg, SC. Take a look at BMW's press release below. Show full PR text The BMW X5 xDrive40e Launches the Next Chapter of EfficientDynamics with its First Ever Plug-in Hybrid Sports Activity Vehicle The new BMW X5 xDrive40e. The first plug-in hybrid BMW Sports Activity Vehicle Up to 13 miles of zero-tailpipe-emission pure electric driving Preliminary fuel economy estimates up to 55 MPGe 0-60 mph in just 6.5 seconds Woodcliff Lake, N.J. – March 17, 2015 ... The BMW X5 xDrive40e, the company's first plug-in hybrid Sports Activity Vehicle, charts the next chapter of BMW's ongoing EfficientDynamics initiative. Benefitting from the groundbreaking work by BMW i on electromobility, the X5 xDrive40e combines the company's award-winning 2.0-liter TwinPower Turbo four-cylinder engine with an electric motor, powered by a lithium-ion battery, integrated into its 8-speed automatic transmission. This newest BMW SAV can travel approximately 13 miles on pure electric power, ideally suited to short commutes and quick trips around town. Working in concert, the gasoline engine and electric motor puts out 308 horsepower and produces 332 lb-ft, enough to propel the X5 xDrive40e from 0-60mph in just 6.5 seconds.