A scandal that has battered Volkswagen’s image in the United States spread to the automaker’s core market in Europe on Tuesday, when thecompany said that 11 million of its diesel cars wereequipped with software that could be used to cheat on emissions tests. That was more than20 times the number of cars previously disclosed.

The company also said it would set aside 6.5 billion euros, or about $7.3 billion—the equivalent ofhalf a year’s profits—to cover the cost ofmaking the cars comply with pollution standards.

In the United States, pressure was ramped up on Volkswagen, with attorneys general for New York and other states saying that they wereforming a group to investigate the deceit, and Senator BillNelson, a Florida Democrat, asking the Federal Trade Commission to begin an inquiryand look into remedies for owners.