According to The Detroit News, the National Highway Traffic Safety Administration is turning up the heat on its investigation into faulty Volkswagen fuel pumps. The administration has announced that it is currently looking into 97,272 diesel Volkswagen and Audi vehicles after receiving a total of 160 complaints about the issue. NHTSA says that in roughly half of those complaints, the bad pumps resulted in an engine stall on the highway or in traffic that prevented the engine from being restarted. Even so, no major accidents have been attributed to the faulty pumps, though one minor fender-bender has been reported as a result of the issue.
The investigation covers 2010 Golf hatchbacks, 2009-2010 Jetta sedans and certain 2010 Audi A3 models as well.
Volkswagen says that the fuel pump issues that it has encountered have resulted from diesel fuel that has been contaminated with gasoline. The company says that even a small amount of gas mixed in with diesel fuel can cause the pumps to shut down. Unfortunately for thusly affected owners, fuel system damage due to using the wrong fuel won't be covered under warranty.
Meanwhile, Volkswagen has informed NHTSA about 120 separate fuel slip-ups, some of which came courtesy of dealers and service personnel using the wrong fuel.