Enhanced this year with variable valve timing and cylinder deactivation, the Mulsanne's 6.8-liter V-8 makes 505 horsepower; its 752 pounds-feet of torque is available at just 1,800 rpm. Combined with a new eight-speed automatic, the drivetrain reduces fuel consumption 15 percent versus the outgoing V-8, according to Bentley.Settings for the steering and adaptive air suspension can be tailored to three modes — Sport, Comfort and an in-between "Bentley" setting — as well as a Custom mode that lets drivers fine-tune each system's specific settings
