Analysts and investors are turning their focus to how the merged company plans to address the huge challenges facing the group – from excess production capacity to a poor performance in China.

The group's two low-cost brands will share a single platform and jointly develop models, including a SUV in the profitable compact segment.

The automaker is readying production of the iX crossover and i4 sedan this year after beginning sales of the iX3 SUV and an electric Mini in 2020.

Winterkorn still faces charges for his role in allowing diesel cars with excessive pollution levels to be sold in Germany.