Ingolstadt-The head of the troublesome VW subsidiary Audi, Gernot Döllner, wants to reduce personnel costs per year by one billion euros. In addition, the material costs should be pressed by up to eight billion euros by 2030, reported this Handelsblatt (Thursday edition), citing group circles. Döllner wants to make Audi more profitable with the hard austerity course, the brand should become slimmer and more efficient. So far, Döllner has not given details.