2009 Porsche 911 Carrera S Coupe 2-door 3.8l on 2040-cars

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VW to pay $1B in settlement with US government over V6 diesels

Volkswagen and the US government have come to a settlement for the civil claims against the automaker's 3.0-liter, diesel V6s. Over 83,000 V6 TDI-powered models are currently prowling US roads in violation of emissions laws. The settlement allows VW to recall over 75 percent of its cheating V6 diesels – about 63,000 units – and bring them into compliance. These represent newer VW Touaregs, Audi A6, A7, A8, Q5, and Q7s, and Porsche Cayennes built between 2013 and 2016. According to the company, the recall will bring these so-called Generation Two engines up to emissions specs, provided the EPA and CARB okay the modifications. Should the regulators say no to VW's tweaks, the company will buy back or terminate leases with the affected owners. For older V6 TDIs built between 2009 and 2012, Volkswagen will do broadly the same thing, only in reverse. It will lead with buy backs of older Touaregs and Q7s – the only vehicles the company sold with the earlier engines – but could offer fixes if EPA/CARB give the okay. As part of its agreement over the emissions-cheating V6s, Volkswagen will contribute $225 million to the "environmental remediation trust" it established as part of its settlement over cheating 2.0-liter TDIs. VW is also on the hook for $25 million with CARB, bringing the total for the six-cylinder part of its emissions cheating scandal to around $1 billion, Automotive News reports. This initial agreement still needs approval from US District Court Judge Charles Breyer. Related Video:

PSA: Mark Webber can't text and drive and neither should you

Texting and driving is dangerous. You shouldn't do it. We really can't stress that enough. But if you won't listen to us, maybe you'll listen to Mark Webber. The Australian driver is one of the most accomplished in motor racing. As Sebastian Vettel's former wingman at Red Bull, he won nine Formula One grands prix and scored over a thousand championship points. And now as the headline driver in Porsche's endurance racing program, he and his teammates behind the wheel of the 919 Hybrid are currently in the lead to win the 2015 FIA World Endurance Championship with just one round to go. Suffice it to say, then, that he knows a thing or two about the concentration it takes to drive. And it doesn't involve looking at your phone while doing so. To drive that point home (so to speak), he and Porsche put together this little public service announcement. It shows a distracted Webber piloting a 911 GT3 Cup around the Dubai Autodrome in the United Arab Emirates, messing up his racing line, missing his apices, spinning out, and nearly trashing the thing. Does the idea of looking at your phone while lapping a race track strikes you as ludicrous? Well, it should. But then, at the risk of coming across as preachy, so should the idea of texting while driving. Because if a racing driver should know better, so should you. Don't take our word for it, though... take it from Mark in the video above.

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.