I have a 2006 passat bought it with 66,000 miles. Everything is stock. I can clearly hear now only when i go over a bump or indentation in the road do I hear a weird sound which I believe is coming from my suspension system. Accurately describing the sound is difficult, but its like a crushing noise. Something like as if the suspension is compressing than decompressing too hard? I dont know. Any tips of what could be wrong? (this started before it was cold out too).
ball joints on the end of the suspension arms are well known for trouble and grinding noises especially if the rubber boots have split
Volkswagen utilizes a floating strut design, wherein the top mount for the strut isn't actually secured like most other cars. This causes a higher probability of noise when the struts get bad, also has a knack for cracking the strut towers. Also, VW's are well known for having rear axle bushings go out. It's not truly an axle, more of a swing-arm like a bike, but the bushings go out and create loud noises as well.