BMW M4 Competition BiTurbo DCT Finished In Mineral Grey With 46,800 Miles, Optional Specification Includes: Adaptive LED Headlights £1,200 Head-up display £825 Loudspeaker system - harman/kardon £675 Surround-view £500 Comfort Access with smart-opener £495 Lane change warning system £440 Driving Assistant £400 Carbon-fibre £395 Reversing Assist camera £330 Sun protection glass £320 M Seat Belts (on Gran Coupe from 01.2018) £260 Speed limit display £220 Steering wheel heating £170 Extended storage £155 Carbon-fibre interior trim, Extended Merino leather Black, Mineral Grey Metallic, Reverse Camera, Front & Rear Parking Sensors, Automatic LED Headlights,