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ACEEE strips away VW's green car scores

The American Council for an Energy-Efficient Economy (ACEEE) is confirming that the Volkswagen diesel-emissions scandal has put a black mark on its green ratings. As a result, the group is pulling VW diesel vehicles off of its "Green Scores" list because it was recently revealed that VW diesels might be emitting as much as 40 times the nitrogen oxide (NOx) emissions during normal driving as the official test results show. The ACEEE added that other German makers of diesel vehicles' "Green Scores" are safe, for now. Diesels from VW and the company's Audi division didn't exacatly top the ACEEE's list of greenest vehicles for 2015. That honor went to electric vehicles like the Smart ForTwo ED, Chevrolet Spark EV and Fiat 500E. The Toyota Prius C hybrid snuck in at number 4, while the Nissan Leaf battery-electric took the fifth spot. That said, the VW diesels did perform pretty well, according to the group. "These scores are no longer reasonable estimations of the environmental impact of the Volkswagen diesels. Volkswagen's diesel cars have performed well on ACEEE's annual rankings since 2009, hovering just below our list of the top twelve "Greenest" vehicles with Green Scores in the high 40s," wrote Shruti Vaidyanathan, senior transportation researcher at the ACEEE. "However, a 40-fold increase in on-road NOx would mean that these vehicles did not deserve those high Green Scores." For those curious, the Ram 2500 pickup topped the ACEEE's "Meanest" vehicle of 2015, followed by the Chevrolet G2500 Express/GMC Savana. No diesels showed up on that list of environmentally-damaging vehicles. You can read the ACEEE's statement on VW below. Why we are suspending Volkswagen diesel Green Scores on greenercars.org by Shruti Vaidyanathan, Senior Transportation Researcher On September 18th, the Environmental Protection Agency (EPA) slapped the Volkswagen Group with a notice of violation (link is external) of the Clean Air Act for circumventing EPA emission standards for nitrogen oxides (NOx). Volkswagen has now acknowledged using so-called "defeat devices" on its diesel cars that turn on full emissions control technologies while in testing mode but allow the vehicles to emit nitrogen oxide levels up to 40 times the certified level during normal operation.

VW air rule violation allegations 'stunning,' $18B fine unlikely

The big automotive news today was the US federal allegations that VW quietly and illegally installed software on approximately 482,000 diesel vehicles sold in the United States so that they would not return substandard results on government emissions tests. To say the least, this is potentially a very big deal. You can read the details of the government's allegations here. The problem seems to be with the NOx trap. Sam Abuelsamid, a former AutoblogGreen editor who is now a senior research analyst at Navigant Research's Transportation Efficiencies program, told me that there were some hints that VW's diesel emissions strategy had issues a while back. The vehicles affected by today's announcement are all equipped with the 2-liter, 4-cylinder TDI, he said. They all have the lean NOx (nitrogen oxides) trap, whereas all other current modern diesels use urea to treat NOx emissions. "When VW launched those vehicles, I went to the TDI launch program in Santa Monica and asked them if they were going to put the diesel engine into the Tiguan because that would be an ideal application," he said. "They said no, because it would be too heavy. Turns out, the NOx trap was enough to meet the emissions standards in the smaller cars, but not the Tiguan. That seems to be where the problem is, in the NOx trap. All the other big VW and Audi diesels, they use urea, just like BMW and Mercedes do." Abuelsamid added that, in California, to do an emissions test, testers don't stick a probe up the exhaust, as you would suspect. Instead, they just do a visual test to make sure nothing was tampered with and then plug a scanner into the OBD-II port to read the codes. The news today basically says that the cars were programmed to send out false codes, giving readings that testers are looking for instead of what's actually going on. "That's the background, as far as I know at this point," he said. This could be "a black eye on the auto industry." - John O'Dell Speaking at the AltCar Expo in Santa Monica just hours after the news first broke this morning, Edmunds.com's John O'Dell said the Fed's allegations were "stunning." The idea that VW might have gamed the system, he said, "underscores how important EPA clean air numbers are, that a company would allegedly stoop to this to try and meet them. Obviously, people are paying attention to that sort of thing.

How the Volkswagen cheating probe developed

Fallout from Volkswagen's revelation that it engaged in cheating on emissions testing continued Monday, with the company's stock falling more than 15 percent and a Congressional subcommittee announcing an investigation into the German auto giant's conduct. Both the Environmental Protection Agency and California Air Resources Board served Volkswagen with a Notice of Violation on Friday, saying the company intentionally circumvented emissions standards by using "defeat devices." Here's a look back at the agencies' emissions enforcement history and how the charges involving Volkswagen developed. August 1998 – Honda spends $267 million to settle charges it violated the Clean Air Act by disabling "misfire monitoring devices" installed on more than 1.6 million vehicles. Ford spends $7.8 million to settle a charge it violated the Clean Air Act by installing defeat devices on 60,000 Ford Econoline vans. May 2014 – Working with the International Council on Clean Transportation, researchers at West Virginia University find significantly higher in-use emissions from a 2012 Jetta and 2013 Passat and alert the EPA to their findings. November 3, 2014 – Korean automakers Hyundai and Kia agree to pay a $100 million fine for overstating the fuel economy on several of their models by as much as six miles per gallon. In announcing the fine, government officials sought to make an example of the two companies to deter further cheating. VW officials admit the vehicles were designed with a defeat device to "bypass, defeat and render inoperative elements of the vehicle emissions control systems." "This type of conduct quite simply will not be tolerated," said then-Attorney General Eric Holder. "And the Justice Department will never rest or waver in our determination to take action against any company that engages in such activities – whenever and wherever they are uncovered." December 2, 2014 – Following discussions that stemmed from West Virginia University's findings, Volkswagen agrees to initiate a recall of 500,000 cars. The company says a software update will fix the nitrous oxide trap technology and selective catalytic reduction technology causing the cars to miss emissions thresholds. May 6, 2015 – CARB wanted to see whether the software fix implemented by Volkswagen worked. Using portable emissions measurement systems, the regulatory officials found NOx emissions were still significantly higher than expected.