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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 Macan Turbo vs Cayman GTS in track battle

"Well this is stupid." On the surface, that was our reaction to this video, as well. Why would you compare the hottest Porsche Cayman with a crossover of any kind, even if it is the 400-horsepower Macan Turbo?
We're guessing because it'd be bloody good fun, as evidenced Auto Express's latest track battle. To be fair, there is some interesting stuff here. The two do have a similar starting price, separated by less than $3,000 here in the US market. And, factoring in the Macan's hefty horsepower and torque advantages - 60 horsepower and 126 pound-feet - does make for a slightly interesting comparison.
We won't spoil the verdict, so check out the full video from Auto Express, and then let us know what you think in Comments.

2015 Porsche 918 Spyder: Touring the factory

Willy Wonka granted just five lucky Golden Ticket holders access to his incredible chocolate factory, yet we consider ourselves just as fortunate, as Porsche invited us to be among the first of just four American journalists to see behind the closed doors of its 918 Spyder assembly plant in Zuffenhausen, Germany. Of course, there were no Oompa Loompas or flowing chocolate rivers, but the vast white hall tasked with producing only 918 examples of the automaker's limited-production flagship revealed details that make Wonka's Golden Egg sorting room seem rather mundane in comparison. Unlike a traditional automobile manufacturing plant, which often encompass all processes of making a vehicle (e.g., stamping steel panels, welding components and painting), the 918 Spyder is built in an assembly plant. This means that hundreds of already manufactured parts, each crafted by Porsche offsite suppliers, are brought under one roof to be assembled into a perfectly finished product that is much sweeter – and far more expensive – than any candy delicacy. Our tour guide was Michael Drolshagen, Porsche's Director of Production, Logistics and Quality - a walking encyclopedia when it comes to the engineering and assembly of the 918 Spyder. Drolshagen generously offered us unrestricted access to walk among the factory's 110 workers – and a couple-dozen vehicles in process – to photograph everything. This is a story best told with pictures, so we've put together a raft of our best images in a high-resolution gallery and captioned each with a detailed description. If you've still got questions, please voice them in Comments section and we'll do our best to answer.