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West Virginia researcher describes how Volkswagen got caught

The cheating scandal engulfing the world's largest automaker started with a road trip. In the spring of 2014, researchers from West Virginia were evaluating the tailpipe emissions of diesel cars made for the American market by European manufacturers, something never before studied in the academic realm. Excited by the prospect of breaking new ground, the team of two professors and two students wanted to gather as much data as possible. "And being academics, we went a little overboard," said Arvind Thiruvengadam, one of the students. "Being academics, we went a little overboard." Overboard included driving the cars for more miles than they needed to test and verify results. Drivers put about 1,500 miles on each of the first two cars in the study, a Volkswagen Jetta and BMW X5, along California roadways. For their final car, a Volkswagen Passat, they wanted even more mileage. So they took the car on a road trip from Los Angeles to Seattle and back again, collecting data from more than 2,000 miles of testing. The road trip was Volkswagen's undoing. When the West Virginia team returned to Los Angeles, they were befuddled by the test results. In theory, the Passat should have spewed the lowest levels of pollutants among the three cars. Equipped with the more modern selective catalytic reduction technology, the team expected to find minimal levels of nitrogen oxide. But the car, which had been certified at a California Air Resources Board facility prior to the start of the road trip, had elevated levels of NOx that were 20 times the baseline levels established beforehand. The researchers, comprised of professors Gregory Thompson and Dan Carder and students Marc Besch and Thiruvengadam, knew their on-board equipment functioned properly because, early in their research, they had double-checked its accuracy after recording sky-high NOx readings from the Jetta that showed 30 times the level of its baseline testing at the CARB facility. It was particularly noteworthy because the Jetta contained the first-generation Lean NOx Trap technology, not the more efficient SCR, yet both produced large discrepancies. The BMW, on the other hand, performed as expected. Today, Thiruvengadam is careful to say the research team never suspected Volkswagen of cheating on emissions testing, nor did the researchers report such a finding. They merely reported their findings to CARB officials who then further investigated.

2015 Volkswagen Touareg TDI Quick Spin [w/video]

There are two particularly great things about diesel-powered cars: torque and range. The 2015 Volkswagen Touareg TDI has both in spades. We put 190 miles on our test car, and upon return, the computer claimed we still had 490 miles to go. We weren't even averaging the EPA-estimaged 29 miles per gallon highway. Plus, that's in a sport-utility vehicle with tons of room and a whopping 406 pound-feet of torque. That said, our most recent adventure with the Touareg wasn't totally positive. This thing feels decidedly long in the tooth, despite a 2014 refresh. Driving Notes The Touareg TDI's powertrain really is the star of the show. The 3.0-liter, turbodiesel V6 has been in service since 2009, but it's still a dynamite engine. With 240 horsepower and 406 pound-feet of torque, the latter of which can be called upon at just 2,000 rpm, there's no shortage of thrust under your right foot. Turbo lag is an issue when you get aggressive with the throttle, but don't drive like a boob and you'll be fine. ZF's critically acclaimed eight-speed automatic delivers that power to all four wheels. But where other ZF-equipped vehicles deliver a crisper, sharper character, the TDI's trans is tuned for a far more relaxed driving experience. Upshifts are leisurely; the eight-speed keeps you right in the thick of the Touareg's broad torque curve. The suspension tuning follows a similar philosophy. It's far more comfortable than dynamic, soaking up all manner of bumps and general imperfections with aplomb. That said, the Touareg does not feel floaty or disconnected – just smooth. The greasy bits of the Touareg are very desirable, but the package they're wrapped in is less so. It's not that the interior or exterior designs are necessarily bad – fans of Earth tones will love our tester's Black Oak Brown Metallic paint and Cornsilk Beige interior – they're just kind of bland, or anonymous. The switchgear and buttons come from the Volkswagen parts bin, and while they're fine on a $20,000 Golf, these pieces aren't as appropriate in a vehicle that starts at more than twice the price. The dash plastics and faux wood don't look as nice as what's inside an Acura MDX, or even a Jeep Grand Cherokee. This mid-level Touareg TDI Lux starts at $57,580.

VW chair says component cost decrease keeps him confident of EV success

Volkswagen AG is in the middle of implementing a comprehensive electric vehicle strategy, one that we've been documenting for a long time. The Group stands ready to offer dozens of plug-in vehicles in the coming years if it feels there is sufficient demand and believes that selling a million EVs in Germany by 2020 is reasonable. That would be a solid number, but remember that VW sold over 5,923,000 passenger cars around the world last year, and the group as a whole sold over 9.7 million. At the company's annual Media Conference and Investor Conference in Berlin recently, the chairman of the board of VW AG - surrounded by some decidedly non-green examples of the VW Group's vehicles (some absurd new Bugatti, for example) - took some time to put the company's EV plans into focus. The upshot is that Dr. Martin Winterkorn is still guiding his electromobility ship into new waters, saying that "many more [plug-in] models will follow." Winterkorn said there are three main reasons he is confident in the ability of VW (and Audi and Porsche, at the very least) to push EV sales upward. Batteries are getting better, he said, and if the ranges can be extended, then customers are happy. But the real secret lies in reducing component costs. He said (as translated): It is important to look at the cost of the components: the battery technology, the electric motor and the electric components. Whenever you go into volume production, you of course have economies of scale. In two to three years' time, if we are able to achieve the goals we are setting for ourselves with cost and reach sufficient volume, I do believe that we can achieve two to three percent [market share] within VW Group. So, hitting a million EVs by 2020 is reachable. With the e-Golf and the e-Up off to excellent sales starts, we're willing to be confident as well.