See also:

BMW X5 xDrive50i: BMW's Twin-Turbocharged V-8.
The new BMW X5 xDrive50i takes its place as the flagship of the X5 family, yielding 400 horsepower at 5,500 rpm and 450 lb-ft of torque at 1,750 - 4,500 rpm from its twin-turbocharged 4.4 liter V- ...

Driving
I'd feel a bit bad for the driver on that trip, though. While the 400-horsepower, turbocharged 4.4-liter V-8 engine is relatively sprightly in the 750i, I thought it was a bit of a laggard while t ...

The M Formula
Following the M car formula, the 1M features increased power, a manual transmission, rear-wheel drive, a modified suspension, fat tires and a distinctive look — perhaps more distinctive than the o ...