On Tuesday, the California Air Resources Board (CARB) rejected Volkswagen Group’s proposed fixes for 2.0L diesel engines that were caught with software to cheat the cars’ emissions control systems.
CARB’s decision (PDF) only applies to 75,688 California cars, but this afternoon the US Environmental Protection Agency (EPA), which is also demanding that Volkswagen put forth proposals to fix the diesel vehicles caught with so-called defeat devices, agreed with CARB's decision. In a statement, the EPA said that to-date, the Germany automaker "has not submitted an approvable recall plan to bring the vehicles into compliance and reduce pollution.”
Volkswagen has been scrambling to avoid regulatory blowback, lawsuits, and consumer outrage since the EPA issued a notice of violation (NOV) in September, accusing the automaker of installing defeat devices on diesel vehicles made after 2009. Volkswagen was eventually forced to admit that some 11 million vehicles worldwide could have the defeat device software on them. The software increases emissions by up to 40 times the limit allowed by US regulators when the car is being driven under normal conditions.