BMW Vows No Power Loss With 4-Cylinder U.S. Sedan Revival: Cars

Bayerische Motoren Werke AG, facing higher fuel-efficiency requirements under the Obama administration, is bringing four-cylinder engines back to the U.S. 12 years after it quit offering the slow-selling option.

BMW says it will offer a four-cylinder engine in its Z4 roadster and 5-Series midsize sedans when they begin arriving on U.S. dealer lots by October, and the company says more nameplates will get the smaller engine with the Munich-based automaker’s TwinPower turbo. BMW dropped the engine from its 3-Series line in 1999, when gasoline cost $1.14 a gallon.