Two new engine drivetrain combinations are available for the BMW 5-Series in 2018. The 550i powered by a 4.4L 8-cylinder engine is now available in xDrive. Horsepower is rated at 456, allowing the 550i to sprint to 60 mph in just 3.9 seconds. The new 540e engine is powered by a 2.0L 4-cylinder engine also aided by a turbocharger and AC synchronous electric motor, making 248 hp and 310 foot pounds of torque, all while allowing that car to get up to 34 mpg on the freeway. The vehicle can be charged in less than seven hours and go a full 16 miles ,