I was wondering if anyone else experiences a sharp jolt whilst pulling away from junctions or roundabouts as mine occasionally does this. The jolt seams like the rear brakes have locked on then suddenly releases. I have checked the brakes and the haldex which seams to run 100%. There is also the rare occurrence of the engine occasionally stalling for no reason when pulling away when this happens it seams as if the engine is chocked when restarted there is nothing for a few months then the same.