Audi's new CEO Gernot Doellner must tackle these 5 problem areas

Audi, Volkswagen Group's cash cow, has been a problem that parent VW has been struggling with for years. Before VW Group's diesel-rigging scandal, which began at Audi, the brand aimed to pass BMW and Mercedes-Benz to become the top global seller of premium cars. Instead, Audi has fallen behind in key areas such as electric cars and in China, its biggest market.