BMW has just released details of the new M550d xDrive, the flagship diesel powered 5-series, which boasts the most powerful six-cylinder diesel engine in production. Based on the latest G30/G31 5 ...
Rumors of BMW M launching a diesel ... You read that right. The M550d Touring hits 60 in 4.9 seconds, with the X5 M50d and X6 M50d passing the mark in 5.4 and 5.3 seconds, respectively.