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During acceleration and driving in low grip conditions, traction and stability are dynamically enhanced by the electric rear-wheel-drive. The hybrid system interacts with the electronic stability system to distribute power to the wheels with best grip. Engagement of the four-wheel-drive is seamless, instant and powerful thanks to the digitally controlled instant torque response of the electric motors. If the front wheels tend to spin when you start on an icy hill, up to 665 Nm can be applied to the rear wheels at very low revs, helping to avoid slip. Compared to conventional four-wheel-drive systems it has less moving parts and very low frictional losses, something that both improves performance and saves fuel.
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