Volkswagen Drivers Need to Wait Another Month for Diesel Car Fix Plan A judge extended Volkswagen's deadline for a plan to fix about 600K cars.

 -- Volkswagen missed a deadline today to present an agreement with regulators to fix its diesel emissions problem affecting more than half a million of its cars in the U.S.

San Francisco District Court Judge Charles Breyer had given Volkswagen until today to create a plan that would fix about 600,000 Audi, Volkswagen and Porsche cars that cheated on diesel-emissions tests, including if the company will pay car owners. The problem affects 11 million cars globally. But during the hearing today, Volkswagen's lawyers said the German company is still working on a way to fix the cars.

Judge Breyer extended Volkswagen's deadline until April 21.

"I would hope by the 21st that as many [outstanding] issues as possible will be wrapped up," Breyer said, according to the Associated Press.

In September, Volkswagen admitted that some of its diesel vehicles used illegal "defeat device" software after regulators said Volkswagen's diesel cars emit nitrogen oxides, or NOx, at 10 to 40 times the federal limit.

Judge Breyer appointed former FBI Director Robert Mueller to oversee settlement talks.

Volkswagen said in a statement today, "Volkswagen is committed to resolving the U.S. regulatory investigation into the diesel emissions matter as quickly as possible and to implementing a solution for affected vehicles, as we work to earn back the trust of our customers and dealers and the public. We continue to make progress and are cooperating fully with the efforts undertaken by Judge Breyer, working through Director Mueller, to bring about a prompt and fair resolution of the U.S. civil litigation."