When BMW released the M1 in 1978, it was a drastic departure from ... Now combined with the twin-turbocharged S68 4.4L V8, BMW's plug-in performance power plant produces 717 ponies and 738 lb ...

Model BMW XM Engine Twin-turbo 4.4-liter V-8 and one permanent-magnet ... with production restricted to 47 units to commemorate the years since the BMW M1's debut. The vehicle will feature an ...