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New info on how VW, Porsche, Audi V6 TDI engine cheat works

The German newspaper Bild am Sonntag is reporting that US investigators have found three pieces of software that work in concert to turn off the emissions control equipment in certain diesel models after a set period of time. The engine in question, the 3.0-liter TDI turbodiesel, was found in certain Volkswagen Touareg, Audi Q7, and Porsche Cayenne models – the sale of which was suspended in the US late last year. Since most emissions compliance testing takes around 20 minutes, the software in the three VW Group models shuts off the emissions control equipment after 22 minutes, a straightforward end run around the testing. Remember that the 3.0-liter TDI engines aren't included in the big buyback and recall program announced for the smaller 2.0-liter, four-cylinder TDI engines. The 3.0-liter engines will likely get their own program, but we don't know when to expect it or exactly what it will look like. Last month, California rejected a proposed fix for the larger TDI engines, and VW went back to the drawing board. Since the company is unlikely to create two fixes, one for California and one for the rest of the nation, the company can't really proceed until they figure out a solution California will accept. The EPA hasn't officially commented on the report, and we don't know how Bild am Sonntag came across the information, but we'll be closely watching what emerges after this report. Related Video:

2016 Audi A3 Sportback headed to US under diesel power [w/video]

Every get the feeling that automakers aren't really listening to what it is that you want in an automobile? Well, Audi is. Following what it calls "an outpouring of enthusiasts' support," the German automaker has announced that it is bringing the new, 2016 A3 Sportback to the US under diesel power, in the summer of 2015.
Unveiled today at the New York Auto Show, the new A3 TDI Sportback joins an expanding range of A3 models available Stateside. Whereas the Sportback hatch was until now only slated to be offered in E-Tron hybrid form, and the TDI only as a sedan, this model combines the bodystyle of the former with the power of the latter. The new TDI slots into the family alongside the gasoline-powered A3 and S3 sedans and A3 Cabriolet as well.
Power comes from a 2.0-liter turbodiesel four with 150 horsepower and mated to a six-speed S tronic transmission. Because it's still a year away from launch, Audi tells us it hasn't determined figures for performance, fuel economy or carbon emissions numbers, but when it joins the company's considerable diesel offerings (which already include the A6, A7, A8, Q5 and Q7) as part of the new A3 rollout over the course of the next 18 months, you can bet it'll provide that combination of low-end grunt and long-range capability that diesel enthusiasts crave. In the meantime you can scope out the details and b-roll footage below for a closer look.

Spy video shows Audi RS4 Avant twin-turbo V6 lapping the Nurburgring

Nurburgring testing season is in full swing, and Audi took some of its newest upcoming models for a spin. That means our first listen to Ingolstadt's new, turbocharged RS engine under the hood of the RS4. Based off the updated A4, the new RS4 Avant is a return to the performance variant's roots. The original RS4 (and early versions of the S4) used twin-turbo V6 power, although more recent models stuffed the beloved 4.2-liter V8 under the hood. The turbo engine in the new model is also rumored to find its way into the back of the R8 supercar. We don't know horsepower figures yet, but with 450 horsepower as the benchmark from the last RS4 we expect big numbers from the six-cylinder. The new engine might be just as powerful as the old V8, but as you'll see in the video, it's missing the phenomenal growl that the 4.2-liter made as it revved to the sky. This new car is quiet, especially compared to the ear-tingling five-cylinder note of the TT RS testing alongside the wagon. A quiet performance car is fine if you like stealth, but with its flared wheel arches, oval exhausts, and big wheels, the RS4 is a car that's anything but subtle. Related Video: News Source: Car Spy News via YouTube Spy Photos Audi Wagon Luxury Performance Videos