Former VW boss Winterkorn remains in four key posts
* Winterkorn is CEO at VW's controlling shareholder
* Also holds key positions at Audi, Scania, trucks unit
* Winterkorn resigned last week to give VW a "fresh start"
By Andreas Cremer
BERLIN, Oct 1 (Reuters) - Martin Winterkorn, the former boss of Volkswagen who quit last week saying he wanted to give the German carmaker a "fresh start" to tackle a scandal over rigged vehicle emissions tests, remains in four key positions involved with the group.
The 68-year-old is chief executive of Porsche SE , the family-owned holding company that controls a majority stake in Volkswagen, as well as chairman of VW's flagship luxury brand Audi, trucks division Scania and the group's newly-created Truck & Bus holding.
The longer Winterkorn stays on in the background, the harder it will be for the company to convince critics it can move on from the biggest business crisis in its 78-year history, according to some investors and analysts.
"It's a real surprise that Winterkorn is still there," said Ferdinand Dudenhoeffer, head of the Center of Automotive Research at the University of Duisburg-Essen.
"VW has pledged a fresh start but his continued presence is detrimental to VW's public image." Continuación...