the car is making a clunk/crunch noise when setting off, sounds and feels like abs testing but not sure if the audi does this? only does it first thing in the morning or if the cars been stood for a while. doesnt do it at junctions etc. also when giving the car full beans there is a rattle like someone dropping pins at high rpm. this is only heard with the window down and I know I should just keep the window up. any help greatly appreciated.