BMW extends the 2-Series Active Tourer range with the introduction of new xDrive all-wheel drive system in top of the range versions. It is for the first time when BMW uses its xDrive system on a front-wheel drive vehicle and with a transversally mounted engine.
With the BMW 225i xDrive Active Tourer (fuel consumption combined: 6.5 l/100 km (36 mpg); CO2 emissions combined: 152 g/km) and the BMW 220d xDrive Active Tourer (fuel consumption combined: 4.8 l/100 km (49 mpg); CO2 emissions combined: 127 g/km), the four-wheel drive system is now available for top-of-the-range power units to further improve traction, vehicle stability and cornering dynamics. The additional weight of the entire four-wheel drive technology is only around 61 kg (134 pounds).
Power from the front drive to the rear axle is transferred by means of an angular gear (Power Take-Off) on the front differential and a two-part cardan shaft. The central component of the four-wheel drive system is an electro-hydraulically controlled multiple-disk clutch (Hang-On) inside the rear axle drive.
In order to guarantee efficient and constant power distribution to the front and rear axle, the four-wheel drive system is managed from the control unit of the Dynamic Stability Control feature (DSC).
