The rear-wheel-drive sDrive35i and all-wheel-drive xDrive35i come with essentially the same standard equipment. That list includes 19-inch alloy wheels, adaptive high-intensity xenon headlights, LED foglights, automatic wipers, auto-dimming outside mirrors, sunroof, power liftgate, and front and rear parking sensors. Standard features in the cabin include dual-zone automatic climate control, leather upholstery, 10-way power-adjustable and heated front seats (with four-way power lumbar adjustment), a power-adjustable steering column, driver-seat memory settings, wood trim accents and a 40/20/40-split folding rear seat. Standard electronics features for all X6 models include BMW's iDrive interface with a touchpad controller and a new 10.2-inch touchscreen, navigation, Bluetooth phone and audio connectivity, the BMW ConnectedDrive services (including BMW Assist emergency communications) and integrated smartphone apps, and a nine-speaker sound system with HD radio, a CD player, USB and auxiliary audio inputs and 20GB of personal music storage. Both the six-cylinder and V8-powered X6 models offer two comprehensive option packages, the xLine and M Sport, both of which include unique 19-inch wheels and the ability to upgrade to 20-inch wheels. The xLine also includes aluminum running boards, while the M Sport package includes special aerodynamic bodywork, the choice of a variety of interior trims, a special steering wheel, a choice between sport seats and multicontour seats for the six-cylinder models, and the ability to add other upgrades such as high-performance 20-inch tires, an adaptive suspension and a higher-limit speed governor. For the six-cylinder sDrive35i and xDrive35i, the Premium package adds keyless ignition and entry, four-zone climate control, satellite radio, wireless cellphone charging and a Wi-Fi hot spot. A Driver Assistance package incorporates a rearview camera and a head-up instrument display that projects pertinent driving information onto the winds