Mercedes re-engineers S class, adds new engines for 2018 by deeperkins | Apr 18, 2017 | Uncategorized The Mercedes-Benz S-class sedan will get a six-cylinder engine with the introduction of the new S450 in the U.S. this fall. It’s part of a new range of engines for the S class, which is being re-engineered and freshened for 2018. Source: Auto Feed