BMW X1 2009 vs Volvo XC60 2009

BMW X1 2009: BMW xDrive is a proactive all-wheel drive system without a center differential that engages before the vehicle becomes unstable, unnoticed by the driver. Torque is distributed between the axles via an electronically controlled multi-plate clutch located in the transfer case. Most of the time, the clutch is partially locked and power is transferred to both axles in a 40/60 front/rear ratio, but the system is capable of sending 100% of the torque to either axle. At high speeds or when parking, for example, the clutch is disengaged and all power is sent to the rear wheels. DSC (Dynamic Stability Control) also brakes the wheels individually to regain traction and assist in cornering.

Volvo XC60 2008: The car is fitted with Haldex Generation IV proactive automatic all-wheel drive. Haldex processes data from the ABS control unit and the engine control unit and can increase the pressure on the multi-disc clutch for faster engagement when required. It has a 100% front to 0% rear torque split when not engaged with a maximum 50% to 50% torque split between axes.