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 ...

Our test M4 Competition convertible blasted to 60 mph in 3.2 seconds before crossing the quarter mile in 11.3 seconds with a trap speed of 122.8 mph.