WOLFSBURG (Reuters) -- Volkswagen Group's supervisory board held crisis talks on Wednesday, facing deadlines from German regulators and U.S lawmakers to explain its rigging of diesel emissions tests and what it is doing to tackle the scandal.
The 20-person board gathered at the German carmaker's headquarters in Wolfsburg.
More than two weeks after it admitted to cheating U.S. emissions tests, Europe's largest carmaker is under pressure to identify those responsible, to say how vehicles with illegal software will be fixed and whether it also cheated in Europe.
The biggest business crisis in Volkswagen's 78-year history has wiped more than a third off its share price, forced out its long-time chief executive and sent shock waves through both the global car industry and the German establishment.
Germany's KBA federal transport authority has set today as a deadline for Volkswagen to spell out plans to make its diesel vehicles comply with emissions laws.
The company has said it may have to refit up to 11 million cars and vans worldwide, and new CEO Matthias Mueller said in a newspaper interview on Wednesday recalls would start in January and would be completed by the end of 2016.
But owners are anxious to know whether the refits will affect the fuel-economy and performance of their vehicles, and analysts also want to know the bill for the recall.
Equinet analysts said the cost could range from less than 100 euros ($112) per vehicle to as much as 10,000 euros, depending on whether Volkswagen needs to upgrade software or install new hardware.
UBS analysts estimated the total bill for the scandal, including potential fines and lawsuits, could be around 35 billion euros, though they also noted this was more than factored into the company's share price after its recent plunge.
'Fright' ahead of U.S. hearing
The supervisory board meeting, where finance chief Hans-Dieter Poetsch was confirmed as the company's new chairman, was due to receive an update from an internal investigation into the scandal, two sources close to the matter said.
A representative from U.S. law firm Jones Day, which is conducting an external inquiry, was also due to attend.
One of the sources said it was too early to name those responsible for rigging tests, and talked of a "certain degree of fright" among management ahead of a testimony by the company's top U.S. executive before a U.S. congressional oversight panel on Thursday.
Volkswagen has come under fire in both the U.S. and elsewhere for a slow response to the crisis.
"We have a lot of questions. We have very few answers," complained Representative Diana DeGette of Colorado, the top Democrat for subcommittee.
In his newspaper interview, Mueller rejected the suggestion Volkswagen informed financial markets too late about the test rigging despite having told officials at the U.S. Environmental Protection Agency weeks before it went public. "Based on our understanding of the law, we informed in time," he was quoted as saying.
Mueller also said he believed only a few employees were involved in the manipulations.
Some analysts and investors are worried that company veterans such as Mueller and Poetsch will not introduce the sweeping changes in business practices they think are necessary to restore Volkswagen's reputation.
They are also concerned about the complexity of Volkswagen's investigations.
One source close to the matter said the supervisory board of the company's flagship Audi brand would also meet this afternoon, and has hired accountants to help investigate the scandal as well.
Audi is still chaired by former Volkswagen CEO Martin Winterkorn, who resigned two weeks ago. The sources said it was unclear whether he would attend the Audi board meeting.