The Bentayga’s 626-hp 6.0-liter twin-turbo W-12 engine is capable of a 187-mph top speed, the manufacturer claims, making it the fastest production sport-utility extant. This car is a  Limited First Edition, and the big difference is that all options will be included in theFirst Edition, making it truly fully loaded. It comes only with all-wheel-drive and an eight-speed automatic.  estimate a 4.0 second 0-60 mph time, and despite the physics involved in moving this large and tall vehicle with such alacrity, we declared it “rather spectacular to drive.” Dynamic drive mode offers eight configurations, and damping is exemplary, seamlessly soaking up bumps.