"One thing is clear, our cost base is too high," Audi CEO Bram Schot was quoted as saying.

He reaffirmed a target for a total of 15 billion euros ($17 billion) in cost savings through 2022.

Audi said in December it would invest 14 billion euros through 2023 in electric mobility, digitalization and autonomous driving.

The division is at risk of losing its position as VW's leading development center as the parent explores potential technology alliances with Ford and other rivals.

Audi aims to reduce the number of engine types by one third and it is also in talks with shop stewards about stopping the night shift at its Ingolstadt factory, Schot was quoted as saying by Handelsblatt.

(Reporting by Ludwig Burger; Editing by Kirsten Donovan)