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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.

Get ready to Camino-ize your fourth-generation VW Jetta with this kit

Inexpensive, small pickup trucks used to be everywhere in the US, whether they were from Japanese brands like Datsun or Toyota, the truly weird Subaru Brat or even from Europe with the Volkswagen Caddy based on the Golf. These days that market has completely disappeared, but if you're willing to pick up some tools to build your own, there's a company out there bringing the Caddy back as a kit for the Jetta.
Mark Smith knows a thing about building a vehicle at home. He has over two decades in the DIY-car business as a co-founder of Local Motors and the company that became Factory Five Racing. His latest venture is Smyth Performance and already offers a mid-engine, VW-based kit called the G3F. His new product, though, started as a fluke. "I just wanted a shop truck," said Smith to Autoblog. He already had a Ford F-450 but found that he was driving around with the bed empty most of the time. The result was a pickup truck based on the fourth-generation Jetta that he dubbed the Ute.
The kit retails for $3,500 and ships in three, big boxes, and it's designed to be built and painted in a weekend. Buyers get fiberglass exterior panels, a fiberglass rear window surround, sliding rear window, an aluminum reinforced bed with a tubular steel subframe, taillights, a fully functional steel tailgate, and other parts. In the end, you get a vehicle with a six-foot bed and a payload of around 700-750 pounds. The Ute maintains all of the factory suspension, fuel tank and emissions equipment and requires just a few cuts in the body to complete. "We did a modern Caddy," admits Smith.

EPA message to automakers: You're on notice

With top administrator Gina McCarthy speaking about the "moral obligation for climate action" on Friday, the Environmental Protection Agency announced it would ramp up its oversight of the auto industry in the wake of Volkswagen's emissions cheating. In a letter sent to manufacturers Friday, the agency said it would begin examining cars to see whether they contained defeat devices "in addition to the standard emissions test cycles." "We are putting vehicle manufacturers on notice." Exactly how the agency plans to test for these devices – which are not devices per se, but algorithms contained in millions of lines of software code that govern vehicle functions – remains unclear. Christopher Grundler, the director of the EPA Office of Transportation and Air Quality, divulged few details in how the agency would uncover so-called defeat devices used by cheaters. "Not today – or actually ever – I'm not going to be describing what new ways we'll be using to detect these defeat devices." Later, he said engineers will have to "come up with some clever ways to do this." The only insight he offered was that the EPA, California Air Resources Board, and Environment Canada would partner on testing more cars for emissions and anomalies. Grundler also said the EPA would diversify its testing fleet. In addition to relying on vehicles provided by manufacturers, the federal agency will now also borrow cars from "private citizens" and utilize rental cars for tests. "We are putting vehicle manufacturers on notice," he said. Joint investigations between EPA and CARB have "been very successful in protecting human health and the environment," said Janet McCabe, the agency's acting administrator in the Office of Air and Radiation. "But we also know, and the Volkswagen violations before us now make it clear, we need to adapt and step up our oversight." That may include an increase in on-road testing in addition to the five emissions tests now more relied upon. The EPA owns and maintains 23 portable emissions-monitoring systems like the one used by West Virginia University researchers who first detected elevated levels of nitrogen oxide emissions from two Volkswagen diesel vehicles. Right now, they're almost exclusively deployed to monitor emission from heavy-duty vehicles, whose NOx emissions "dwarf" the amount produced by light-duty vehicles, which produce less than 2 percent of the total, according to the agency's figures.