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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:

Audi Q4 crossover starts production in 2019, Q8 in 2018

Audi's crossover line-up will be expanding in the next couple of years. The company announced production dates both for the already announced Q8 flagship, as well as its less-publicized Q4 compact. The Q8 will begin production next year at a plant in Slovakia that currently builds the Q7. The Q4 will start production in 2019 at a plant in Hungary that will also build the Q3. Audi has shown us concepts of the Q8 already, and we've seen prototypes undergoing testing. But Audi hasn't said much about the Q4 until now, and we haven't seen camouflaged examples running around yet. Audi says the Q4 will have a "coupe-style silhouette" and "be positioned between the Audi Q3 and Q5." Of course that second part you probably figured out based on the name. The description of its looks leads us to believe that this will be the production version of the Audi TT Offroad concept, pictured above, from a few years ago. However, don't expect the concept's 408-horsepower hybrid powertrain to be offered, at least not at the start. It's been a long time coming for this crossover. The TT Offroad was reportedly confirmed for production back in 2015. And last year, Audi secured the trademark for Q4 from Fiat Chrysler. With production starting in 2019, it will probably still be a while before we get a glimpse at the new SUV. Odds are, we'll see a concept early next year at the soonest, followed by the production model at the end of 2018. As for the Q8, we would expect to see the production model revealed at the end of this year, or possibly early next year. Related Video:

Audi R8 LMS GT4 debuts in New York, a ready-made race car

The new Audi R8 LMS GT4 race car has made its debut at this year's New York Auto Show. Since 2009, the Audi R8 LMS GT3 has been available for customer purchase, but this new model is intended to be even more affordable. LMS GT-class racing is some of the most entertaining out there. Unlike racing series such as Formula 1, NASCAR, or even the World Rally Championship, GTE, GT3, and GT4 cars are still based heavily on cars you can find on dealer lots today. The GT4 class was created to have a true entry-level racing series. Homologation keeps the cars closer to their production counterparts than any of the other GT classes. Engines, bodywork, and suspension are all similar to production versions, though substantially beefed up for racing. In the case of the Audi R8 LMS GT4, more than 60 percent its parts are shared with the R8 coupe. That means parts are plentiful and relatively affordable. There are some significant changes between the production and racing versions. First, the V10 in the road car is actually far more powerful. The R8 LMS GT4 is limited to 495 horsepower, though that can vary slightly to meet different regulations. Also, rather than having Audi's wonderful Quattro all-wheel drive system, the R8 LMS GT4 is rear-wheel drive. Power is sent to the wheels through a seven-speed dual-clutch transmission. Though the car is set to make its debut next month at the Nurburgring 24 Hours, it won't actually be competing until the start of the 2018 season. Audi is simply tuning the car at different tracks before asking for approval at the end of the year. Pricing hasn't been announced, but expect it to fall between the $145,000 of the RS3 LMS and the $450,000 of the R8 LMS GT3. That's not nothing, but in the world of professional racing, it's a relative bargain. Related Video: