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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 to reveal Cayman GT4 Clubsport racer in LA

Aspiring professionals and amateur gentleman racers alike will want to swing by the Porsche booth at the LA Auto Show this year. That's where the German automaker will be revealing its new entry-level racer. The Porsche Cayman GT4 Clubsport is nearly stock, but features some choice upgrades to cater its disposition toward the racetrack. Power comes from the same 3.8-liter flat-six as the road-going Cayman GT4 (shown above), producing the same 385 horsepower. It ditches the manual, however, for the faster-shifting DCT (which we expect will soon be offered on the showroom version as well), aided by a mechanical locking differential. It features the front suspension setup from the 911 GT3 Cup car and beefed-up steel brakes. It's also got a roll cage inside and a racing bucket with a six-point harness. All told, the whole package weighs 2,866 pounds – making it a good hundred pounds lighter than the street-legal model on which it's so closely based. Once homologation is complete, customers will be able to field it in series like the Pirelli World Challenge, Continental Tire Sports Car Challenge, and Pirelli GT3 Cup Trophy. Porsche has yet to release images, but we'll be sure to update this post as soon as they're available – so watch this space. New race car for motorsport newcomers Porsche develops Cayman GT4 Clubsport Stuttgart. Using the lightweight Cayman GT4 as the basis, Porsche Motorsport has developed a near-standard racing version. The Cayman GT4 Clubsport celebrates its world premiere at the Los Angeles Motor Show on 18 November. Sales of the 283 kW (385 hp) mid-engine racer for motorsport newcomers also start on this date. Just like its race-worthy production sibling, the Cayman GT4 Clubsport is powered by a 3.8-litre flat-six engine. The racing version features a Porsche double clutch transmission with shift paddles on the steering wheel and a mechanical rear-axle locking differential. The lightweight suspension strut front axle is taken from its big 911 GT3 Cup brother, which is campaigned in Porsche's 20 one-make championships around the world. The impressive racing brake system is fitted with steel brake discs all round measuring 380-millimetre in diameter. Tipping the scales at just 1,300 kilograms, the Cayman GT4 Clubsport, delivered ex-works with a welded-in safety cage, a racing bucket seat as well as a six-point harness, is truly lightweight.

Porsche confirms four-cylinder Boxster, Cayman replacement for US

Those who've been anxiously awaiting the return of the four-cylinder Porsche will be glad to know that the wait is almost over. What's more, the quad-pot Porsches won't be kept away from US showrooms but will form an integral part of the company's North American strategy. Confirmation comes courtesy of Automotive News, which spoke to the company's chief executive Matthias Muller about its return to four-cylinder power. "First of all, we will have it in the Boxster and Cayman successor," Muller told AN. "And then we will see how it works and how successful it is and how the customers will react on that, and then we will take the next decisions." The model to which Muller refers is expected to be the 718 – a new line taking the place of the Boxster and Cayman, ostensibly allowing Zuffenhausen to start from scratch rather than "downsizing" the engine on existing models. The new range is anticipated to launch sometime in the middle of next year. Porsche is currently offering a 2.0-liter inline-four with 234 horsepower in the Macan (which we get with V6s) for certain markets overseas, but the 718 is expected to get a new flat-four 2.0- and 2.5-liter displacements with output edging up to 395 horsepower. The last time Porsche offered a four-pot in the US was with the front-engined 968 that wrapped up production two decades ago, but it hasn't offered a boxer four since 1976.