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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 sells final 918 Spyder amidst excellent year of sales

2014 has been a banner year for Porsche, as the company has moved over 169,000 units through November, an increase of around 12,000 units over the same period in 2013. During last month alone, the company's sales saw a year-over-year jump of 25 percent. The European market, meanwhile, saw an 18-percent jump in sales, while its North American efforts have jumped 13 percent. "This strong November is evidence that our strategy is working extremely well," Porsche board member Bernhard Maier said in the accompanying statement. "It also confirms our commitment to taking advantage of every opportunity presented in the global markets." Those notable sales gains aside, this latest sales report comes with some bad news for the overwhelming majority of Porsche fans – the last 918 Spyder has been sold. All 297 cars have been spoken for, with US deliveries set to begin soon. According to Porsche, there are currently around 100 Spyder owners spread across Germany and China. Porsche exceeds previous year's sales by November Last unit of the 918 Spyder sold Atlanta. Porsche AG increased global deliveries to customers from January to November this year to more than 169,000 vehicles, already exceeding the overall total for 2013 of 162,145 new vehicles. This represented a growth of 15 percent over the same period last year (January to November 2013: 147,290 vehicles). In the month of November, Porsche delivered 17,700 vehicles – an increase of one quarter over the same month last year. "This strong November is evidence that our strategy is working extremely well," said Bernhard Maier, Member of the Executive Board – Sales and Marketing of Dr. Ing. h.c. F. Porsche AG. "It also confirms our commitment to taking advantage of every opportunity presented in the global markets." In Europe, Porsche delivered 54,500 vehicles from January to November 2014 – an increase of 18 percent over the previous year, with the domestic German market accounting for 22,200 of the sales. The American region also showed a significant 13 percent increase over last year with a total of 51,600 deliveries. In addition, November announced the finality of sales for the 918 Spyder hybrid super sports car. With a limited run of 918 units, the majority of the cars – 297 – will be shipped from the Zuffenhausen manufactory to buyers in the USA. In both Germany and China there are already around 100 proud new owners who have taken delivery of the super sports car.

Audi says fixing diesel emission problem is simple

Audi reportedly has a simple repair nearly ready to fix the emissions problem on 85,000 vehicles with the 3.0-liter TDI V6 in the US. "Swift, straightforward and customer-friendly solutions are in discussion," company exec Rupert Stadler told workers in Germany, according to Reuters. In late November, Audi announced that the 3.0 TDI had three previously undisclosed auxiliary emission control devices, including one that was potentially considered a defeat device under US law. At the time, the German automaker claimed it could repair the problem with just a software update. Stadler's statement indicates that just such a simple fix might be on the way. Even before Audi's disclosure of the emission control devices, the Environmental Protection Agency issued a notice of violation against the 3.0-liter TDI for allegedly having software to defeat emissions tests, and the agency later expanded the scope to any vehicle with the engine from 2009 through 2016. The affected models include the Audi A6, A7, A8, Q5, Q7, Volkswagen Touareg, and Porsche Cayenne. New diesel versions of these vehicles have a stop-sale. Audi offered owners of affected vehicles the same $1,000 Goodwill Package that parent company VW offered to its affected diesel owners. The money is split up into a $500 gift card and $500 to spend at the Audi dealer. The package also comes with extended roadside assistance. Audi needs to find a solution quickly because it's under a 45-day deadline from the California Air Resources Board to submit a recall plan for the 15,000 vehicles with the 3.0 TDI in the state. The automaker also must include a report on any effects to fuel economy and performance from the proposed repair. Related Video: