Ok so I changed the mobil1 synthetic oil. After driving 200miles, the MIN light came on again. What I have to do with it?

 

Check the oil level with the dipstick. If it is low add enough to fill it. Then check it once a day to see if it drops again. If the oil level is at the half way mark or higher it might be a bad sensor causing your light to come on.

If the oil level is dropping check for leaks. Check on the ground where you usually park to see if you have oil spots. If you cannot locate a leak then it might be burning the oil. You will want to take it to a mechanic for a compression check. That will tell you you if oil is getting past the piston rings. You also can take it to an Audi (or VW) dealer and have them do an oil consumption test.