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VW Emissions Test Cheating More Widespread in Germany: Official

VW rigged emission tests on about 2.8 million diesel vehicles in Germany, nearly six times as many as it has admitted to falsifying in the U.S.

WOLFSBURG, Germany -- Volkswagen rigged emission tests on about 2.8 million diesel vehicles in Germany, the country's transport minister said on Friday, nearly six times as many as it has admitted to falsifying in the United States.

His comments, pointing to cheating on a bigger scale than previously known, deepened the crisis at the world's largest automaker as its supervisory board held a crucial meeting.

The board is widely expected to name Matthias Mueller, the head of its Porsche sports-car division, as chief executive to replace Martin Winterkorn, who quit on Wednesday, and at least four senior executives are expected to be purged.

Shares in the German company, which had started to steady after sharp falls earlier this week, were down 4.5 percent at 1335 GMT (9:35 a.m. ET) after Bloomberg also reported that executives in Germany controlled aspects of the manipulated U.S. tests, citing three people familiar with the U.S. business.

Volkswagen is under heavy pressure to show it can get to grips with the biggest business-related scandal in its 78-year history.

Mueller, 62, would represent part of the fresh start that Winterkorn said was needed when he stepped down. The board will also dismiss the head of its U.S. business, the top engineers of its luxury Audi and Porsche brands and the head of brand development at its VW division, sources said, aiming to show it is acting decisively to end the crisis.

Volkswagen Scandal Delivers 'Black Eye' to Diesel Tech as a Whole

Volkswagen shares have plunged as much as 40 percent, wiping tens of billions of euros off its market value, since U.S. regulators said last Friday it had admitted to programming diesel cars to detect when they were being tested and alter the running of their engines to conceal their true emissions.

The scandal keeps growing. German Transport Minister Alexander Dobrindt said on Thursday Volkswagen had also cheated tests in Europe, where its sales are much higher, and on Friday put the number of affected vehicles in Germany at 2.8 million.

Regulators and prosecutors across the world are investigating the scandal.

The wider car market has been rocked, with manufacturers fearing a drop in sales of diesel cars and tighter regulations, while customers and motor dealers are furious that Volkswagen has yet to say whether it will have to recall any cars.

"VW needs to be very open about what has happened, how it was possible that this could happen to make sure that this never happens again in the future," said a leading Volkswagen shareholder, underlining the importance of the board meeting. "These are priorities that should override all other considerations at the moment."

The task facing Mueller, if his selection is confirmed, is huge.

California Air Board Plans 'Major Enforcement Action' Against VW

The company said on Tuesday 11 million vehicles worldwide were fitted with the software that allowed it to cheat U.S. tests, while adding it was not turned on in the bulk of them.

Analysts hope that on Friday it may at last say which models and construction years are affected, and whether cars will need to be refitted. They also expect it to announce a full investigation of the scandal, with German newspaper Handelsblatt saying it planned to hire U.S. law firm Jones Day to lead a no holds barred inquiry, and to give the outlines of a new management structure likely to be less centralized, but with a clearer system of checks.

Volkswagen has long been seen as a symbol of German industrial prowess and the auto industry is one of the country's major employers and a key source of export revenue.

Earlier this month, Volkswagen delivered a presentation to investors at the annual Frankfurt motor show entitled "Stability in Volatile Times." Now German Chancellor Angela Merkel is urging it to act quickly to restore confidence in the Volkswagen name.