BMW was very busy in 2015, adding three new models to the lineup. These included the brand new M4 coupe, the all-new Alpina B6 Gran Coupe and the X4 compact crossover SUV. Meanwhile, the X3 got a new engine with rear-wheel-drive, the X6 was completely redesigned with all-new tech features, and Bluetooth was added as standard feature to the 3, 4 and 5 Series (which also got LED head foglamps). The 6 Series got the desirable touchpad iDrive controller as a standard feature, while the 7 Series added a diesel 740Ld xDrive with better fuel economy. Lastly, the Alpina B7 was outfitted with LED headlamps and rolling Wi-Fi, while remote entry/start was added to the M5 as a standard feature.