I took a nasty knock when I first got my 1.8T

Lost the under engine cover and my exhaust took a big whack! F**CKING Speed bumps

For a while every little bump caused a nasty knocking noise so took it to my mate who put it on ramp. Shook the exhaust and saw that one of the fixings had come lose which was making the knocking noise. 30seconds of welding later, all sorted!