rattling

I've just bought an -04 A2 TDi 75 Milage? 126000km Driving home from previous owner a sound appeard in third gear. Driving along in 3rd gear at ca 2500 revs, it startet rattling. Seems liike the sound is coming from under the gearleaver/handbrake. It's like metal rattling, it stops when...

Since I brought my car I noticed the passenger left side vent had the middle peice missing (the peice which you move the vent left/right, up/down), and while driving around I can hear the peice inside the vent rattling around, and it is very annoying. I can not see the peice, so I wondering...