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EPA discovers defeat device in more VW TDI engines

In a sternly worded letter, the United States Environmental Protection Agency has issued a new set of allegations against Volkswagen claiming that so-called emissions defeat software has been found in the company's 3.0-liter TDI V6 diesel engines. This is a completely different engine than the 2.0 TDI that has already been identified as an emissions cheater. In addition to VW, the EPA has included Audi and Porsche in this notification, as the non-compliant engine has been used in vehicles from all three manufacturers from model years 2014 through 2016. The EPA claims that cars equipped with the 3.0 TDI engine know when they are being tested for emissions, and their on-board computers switch into a mode designed to pass the stringent requirements in the United States for diesel exhaust. Vehicles sold in the United States with this engine include the 2014 VW Touareg, 2015 Porsche Cayenne, and 2016 Audi A6, A7, A8L and Q5. The EPA says there are 10,000 vehicles currently on the road with this second defeat device, along with an unknown number of 2016 models either on dealer lots or in the driveways of consumers. According to the EPA, VW's 3.0-liter TDI, like the 2.0 TDI that was found to circumvent US regulations, has code in its computer specifically written to intentionally put the vehicle's engine into a mode that allows it to meet exhaust requirements. When the vehicle is unhooked from testing equipment, it will go back into a mode that emits nine-times higher nitrogen oxide emissions than is allowable under US law. "VW has once again failed its obligation to comply with the law that protects clean air for all Americans," said Cynthia Giles, Assistant Administrator for the Office for EPA's Enforcement and Compliance Assurance. "All companies should be playing by the same rules. EPA, with our state, and federal partners, will continue to investigate these serious matters, to secure the benefits of the Clean Air Act, ensure a level playing field for responsible businesses, and to ensure consumers get the environmental performance they expect." Richard Corey, Executive Officer of the California Air Resources Board, said in a statement, "Today we are requiring VW Group to address these issues. This is a very serious public health matter. ARB and EPA will continue to conduct a rigorous investigation that includes testing more vehicles until all of the facts are out in the open." This story will be updated as new information becomes available.

Porsche considering turbo for new GT3 RS [w/poll]

Some automakers make one hardcore version of a sports car and are done with it. Or at least they make one at a time. Think Ferrari 458 Speciale, Lamborghini Gallardo Superleggera (or Super Trofeo Stradale or Squadra Corse) or Maserati GranTurismo MC. But not Porsche. It transforms the 911 into the hard-core GT3, the even harder-core GT3 RS, the you've-got-to-be-psychotic GT2 and the do-you-have-a-death-wish GT2 RS. The RS models take things to a further extreme, but what separates GT3 from GT2 models has traditionally been the use of foced induction: GT3s are naturally aspirated, while GT2s go turbo. But that could all be about to change.
According to the rumors making their round of the webosphere, Porsche is considering using a turbocharged engine for the next GT3 RS. The reason is that, as we all know, Porsche has already pushed the 3.8-liter flat-six in the existing GT3 about as far as it can go, and then some. And buyers expect not only a more bare-bones package with the GT3 RS, but also a bit of extra power.
Given that everything seems to be going turbo these days, the move might make some measure of sense, especially if Porsche wants to avoid with the GT3 RS the spontaneous combustion issues it faced with the GT3. But we can't help but wonder why, at that point, it wouldn't just skip the GT3 RS and go straight for the GT2.

Porsche confirms four-cylinder Macan for New York

There aren't a lot of problems with the Porsche Macan. It's clean, handsome, and very, very nice to drive. But it's expensive, starting at $55,450, and thirsty, at 17 miles per gallon in the city and 23 on the highway. To improve on both of these, Porsche is adding a 2.0-liter, turbocharged, four-cylinder Macan to the lineup. The new engine moves the compact CUV downmarket on both power and price fronts. In the Macan, the 2.0-liter pumps out 252 horsepower, 273 pound-feet of torque, and compared to old base model, cuts the curb weight from 4,112 pounds to 3,902 pounds. Combined with a seven-speed PDK and a standard all-wheel-drive system, the new base level CUV will hit 60 miles per hour in just 6.1 seconds. You still have to suspend logic when buying a Macan, though. At just 20 mpg in the city and 25 mpg on the highway, it's scarcely more efficient than the 340-hp S model. Admittedly, the Macan's competitors all eke out substantially better fuel economy, but each of these vehicles does so with less power than Porsche's new base Macan – the BMW X3 has 240 ponies, the Mercedes GLC has 241, and the Audi Q5 just 220. But they also do it for a lot less money. The new Macan starts at $48,550, including a $1,050 destination charge. That's $6,900 less than the Macan S, but it's still around $7,000 more than the all-wheel-drive versions of the aforementioned cars. And yes, that chasm is almost certainly going to widen after digging into Porsche's options catalog. Still, this is an intelligent and overdue move for Porsche here in the US (the four-pot Macan has been on sale in Europe for years). It opens up the Macan to a far wider swath of customers, not unlike what the V6 model does for the Cayenne. Look for more on Stuttgart's new entry level CUV in a few weeks, when it makes its big debut in the Big Apple. Related Video: PORSCHE ANNOUNCES NEW YORK AUTO SHOW LINE-UP North American debut of Porsche 911 R, 718 Boxster, and Macan Atlanta, Georgia. The New York International Auto Show will be host to three North American debuts for Porsche this year. The 911 R and the 718 Boxster both represent the latest interpretation of driving pleasure and dynamics in their respective segments. The 911 R is a pure, uncompromised driving machine with a naturally-aspirated, 500 horsepower engine mounted in the rear. The 718 Boxster features extensive chassis enhancements and an all-new turbocharged, mid-mounted flat-four cylinder engine.