BMW's new M5 prompted controversy, with its switch to a potent - and heavy - plug-in hybrid drivetrain. But does heft detract ...

Although the Bavarian sedan is a bit porky, the 370-kilogram lighter RS 7 Performance didn't stand a chance against BMW's ...

F or the first time in its storied history, the BMW M5 features a plug-in hybrid powertrain. It combines a twin-turbocharged ...