I have a 1999 Audi A4. Recently there is a burning smell when driving that is noticeable when stopped after driving. At night I noticed a faint white smoke blowing out of the front in the headlights. I mentioned the smell when it was in the shop last time and they didn't find any leaks but I'm now concerned after seeing the white smoke.
I'm taking it back into the shop in a few days but thought I would ask for opinions before going in blind.
Other recent symptoms: A/C not cooling well anymore and slightly low coolant a month ago. Check engine lights back on. Was a low voltage warning last time due to a jump but not sure now.