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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.

Volkswagen pushed back against Takata airbag recall

Volkswagen and Audi will recall about 850,000 vehicles in the US to replace their Takata-supplied driver side airbag inflators, but the automaker doesn't believe the safety campaign is entirely necessary. In a letter to the National Highway Traffic Safety Administration, the company pushes the agency to re-evaluate the recall's scope because the parts are allegedly safe, it claims. VW asserted in the letter, which NHTSA posted online (as a PDF) with other documents about the company's safety campaign, that the vast majority of the automaker's recalled vehicles used Takata inflators from the supplier's factory in Freiburg, Germany. Only the US-built Passat had components from Takata's plant in Mexico. VW's argues to NHTSA that its recall is unnecessary because there are no reported airbag ruptures in the German-made parts, and the plant has better quality control than Takata's factories in the US and Mexico. In addition, the Mexico-manufactured components in the Passat are also allegedly safe because they come from a time after significant upgrades to the plant to address humidity and welding concerns. "We do not believe the facts known to date support the scope as defined in the Takata defect notification," VW's letter says. To be clear, VW is not refusing the Takata recall and plans to fix the affected vehicles. Instead, this letter shows the automaker expressing an opinion that NHTSA's scope for the campaign is too broad. VW now plans to do its own analysis on the inflators to strengthen that case, according to The Detroit News. "We respectfully request that, should such results be shown, the agency work with Volkswagen and other manufacturers to revisit the scope of these recalls," the letter said. Takata's recalled inflators use ammonium nitrate as a propellant, and experts believe that long-term exposure to high humidity can make the chemical more likely to cause a rupture during airbag deployment. The spray of metal shrapnel from the exploding parts has links to at least 10 deaths. Related Video:

VW confirms Golf GTD diesel coming to US for 2016

Part of the Volkswagen Golf recipe that has helped the car sell more than 30 million units in just under 40 years is the number of variants in which the hatchback is offered. Building on that range here in the US, Automotive News is reporting that we will finally be getting the sporty Golf GTD, likely as a 2016 model. It's the GTD, you'll recall, that crosses the performance abilities of the venerable GTI with a powerful and fuel-efficient diesel engine.
After speaking with Andreas Valbuena, Volkswagen product manager for the Golf, AN not only says that the GTD will for sale in the US in a couple years, it also estimates a baseline price of around $27,000, which would place it between the current pricing for the GTI and the Golf R. The GTD is launching in Europe this summer, but we won't be getting the seventh-generation Golf in the US for another year. The news about the performance diesel model isn't entirely unexpected - VW officials have been hinting at it for at least a year now, going so far as to import a sixth-generation model for media test drives on US soil, a task we happily took them up on last year.
The Mk VII GTD uses VW's 2.0-liter TDI engine with output increased to 184 horsepower and 280 pound-feet of torque, allowing the car to sprint to 60 miles per hour in about seven seconds while returning more than 40 mpg in highway driving. We can't wait.