Hey guys, bought me a car a week ago. The car has a new pickerl which is valid until September next year. The pickerl was made about 3 weeks ago so still quite fresh and there are 6 slight defects written down. After I bought the car I noticed a funny noise during the steering, then I had it picked up and discovered 7 serious defects that could not arise overnight like rust. What would be the best advance now? I hope someone can help me.