Have not had my windowscreen replaced due to stone damage and ever since i have had an inconsistant buzzing noise coming from the dashboard which seems to be apparent particularly on motorway travelling and uneven surfaces along with vibration from speaker!

Have had it in to Audi who cant pinpoint error having not experienced it to full affect - can anyone suggest what it could be.

Have had the glass replace twice as i wasnt happy the first time round, however it has never gone and dont really want to take it back to the incompetants windowscreen place again!