Meet the most powerful BMW M car ever, the 738 horsepower BMW XM Label Red. The 4.4L V8 engine has been uprated by 95 hp to a new total power output of 577 hp with 553 lb-ft of torque to play with. Adding the upgraded 194 hp and electric motor into the mix sees the combined output reach new records for the famous brand. As a result, the 0-62 mph sprint in now 0.5 seconds faster than the regular XM stopping the clock at 3.8 seconds.
