The BMW XM is easily one of the most controversial and ... without any internal changes to the S68 engine. Even without the massive "MANHART" wrap plastered across the windscreen, you'll easily ...

The S68 V8 is a recent addition to BMW's engine lineup. It is offered in range-topping cars like the X7 and XM. In the XM Label Red, the most powerful variant of the XM, it churns out 585 horsepower.