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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.

2021 Ford Bronco is here, and a Stellantis is born | Autoblog Podcast #636

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by West Coast Editor James Riswick and Road Test Editor Zac Palmer. They kick things off by diving headfirst into the Ford Bronco and Bronco Sport before moving to what they've been driving: 2020 BMW X3 xDrive 30e, 2020 Hyundai Ioniq Hybrid and a 2020 Ford Expedition. Then, the three tackle Stellantis, Chrysler's new corporate name. Finally, James and Zac reminisce and discuss their time in a couple classic Honda coupes. Autoblog Podcast #636 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Introducing the 2021 Ford Bronco and Bronco Sport Cars we're driving 2020 BMW X3 xDrive 30e 2020 Hyundai Ioniq Hybrid 2020 Ford Expedition News Stellantis Retro Hondas 1999 Honda Prelude Type SH and 1999 Honda Civic Si Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video:

Behind the scenes of BMW's 'Drift Mob,' Part 1

Generally speaking, marketing and journalism don't mix, but every now and then, what goes into the marketing of a car - the 2015 BMW M235i, in this case - is worth documenting. In that spirit, we took BMW up on its offer to bring us behind the scenes of its upcoming "drift mob" video, starring five red M235i coupes frolicking around a traffic circle in a major world city (BMW has asked us to be coy about which one so as not to blow its cover before the shoot).
The five drivers can all be considered legends of modern-day drifting and stunt driving: Rhys Millen, Samuel Hübinette, Dai Yoshihara, Rich Rutherford and Conrad Grunewald.
As the only US media outlet in attendance, Autoblog plans to follow up with a full story on the experience once BMW polishes and releases the video in a month or so. In the meantime, check out our photos of this epic practice session we captured on our first day hanging with the crew, and be sure to watch this space for more behind-the-scenes action.