1978 Porsche 911 Convertible on 2040-cars

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NHTSA closes probe into 2011 Porsche 911 coolant leaks

The National Highway Traffic Safety Administration has announced that it will end its investigation into rapid coolant loss in 24,635 Porsche 911s built between 2001 and 2011. The models affected included the standard 911, GT2, GT3 and Turbo, as well as their variants (GT2 RS, GT3 RS and Turbo S).
NHTSA was investigating for "rapid coolant loss caused by coolant pipe-fitting failure, allegedly resulting in vehicle disablement and/or loss of vehicle control due to reduced traction for the affected vehicle or following traffic," according to the regulators website. "Most of the leak complaints did not appear to involve complete separation of the fittings and many were detected when the vehicle was parked," said NHTSA's statement.
There were 63 complaints and 336 warranty claims, although the investigation was initiated after ten complaints from customers. There have been no reports of crashes or injuries attributed to rapid coolant loss.

Porsche CEO Matthias Mueller throws hat back in ring for VW CEO job

Toward the end of February it got leaked that Porsche CEO Matthias Muller was being promoted to Volkswagen's supervisory board. Muller's credentials and his success over 36 years at the VW Group have, for observers, put his name in the pool of potential candidates to succeed current group CEO Martin Winterkorn when Winterkorn retires in two years. But the 61-year-old Muller told German newspaper Frankfurter Allgemeine Zeitung earlier in February, "It's no solution to put a 63-year-old at the head of Volkswagen," and the statement was taken to mean he wasn't considering the job. Muller now says the quote was misunderstood. In a report in Automotive News, the newly minted board member says he was commenting on what it would mean for the supervisory board and the Group if they nominated a 63-year-old to replace a 69-year-old - that it wouldn't result in a "generation change." However, if that's what they choose to do, Muller feels great: "I stand ready to take over any assignment," he said. Muller's name re-enters the candidacy pool, but we still have no idea who leads the running for the role and Winterkorn isn't saying a word. It could be three years before we know: Winterkorn's contract concludes at the end of next year but there is speculation he'll re-up for two years to see out the end of the Strategy 2018 initiative.

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.