PARIS -- Daimler CEO Dieter Zetsche says he is ready to do the "previously unthinkable" at Mercedes-Benz to help it meet its goal of becoming the world's most fuel-efficient premium carmaker.
The Mercedes S-class luxury sedan will be sold with a four-cylinder engine -- a 2.2-liter diesel -- for the first time in the flagship's 60-year history, Zetsche, who is also head of Mercedes-Benz Cars, said at the Paris auto show.
"Some might call this sacrilege. We call it progress," Zetsche told reporters at a press event for the S class. "We want to be efficiency world champions ... and we will be."