EPA 27 MPG Hwy/19 MPG City! Moonroof, Brake Actuated Limited Slip Differential, Dual Zone A/C, Keyless Start, iPod/MP3 Input READ MORE!KEY FEATURES INCLUDESunroof, All Wheel Drive, Power Liftgate, Turbocharged, Premium Sound System, iPod/MP3 Input, Onboard Communications System, Aluminum Wheels, Keyless Start, Dual Zone A/C, Brake Actuated Limited Slip Differential MP3 Player, Privacy Glass, Remote Trunk Release, Keyless Entry, Child Safety Locks. EXPERTS CONCLUDEEdmunds.com explains In any form, the X4 exhibits excellent high-speed stability and generally holds road noise to an absolute minimum.. Fuel economy calculations based on original manufacturer data for trim engine configuration. Please confirm the accuracy of the included equipment by calling us prior to purchase.