A 3 problems!!!

Moin, moin, I bought myself an A3 a month ago (Bj. 97, 101 Ps, 1.6 L, no climate). Since then I have visited numerous workshops, because the car has a pair of Macken. I could fix a couple, however, there are still some open, because they are a little more expensive and I do not want them on good luck, because some learned car-tuppi tells me that it may be because of it. Therefore I turn to you, because I prefer the advice of independent with a little bit So this is the following: 1. The car almost goes off when it starts up (battery lights up). This happens more strongly in the cold condition, but sometimes occurs in the warm condition. 2. When driving, a knocking sound is noticeable from the front. Proclaimed by unevenness on the road. Workshop meant it were the track rod heads. I had them done. Noise was still there. Then just the cross handlebar bushings (according to the motto: something will already be). This time I didn’t let them do it, as I will soon have a completely new car. 3. Noise in the interior, which I think will come from behind. I checked the windows, they are closed. 4. and lastly the exhaust, especially at low speeds (800-1200) makes a tubular noise. The exhaust is tight. that’s for sure. Would be nice if I had some opinions about my above I would like to thank the rapporteur for his excellent report.