Hi I hope someone can please help me figure out the problems I have with my car. I have a Audi A4 Avant 2013 b8.5 1.8 petrol and the first issue is that I have very very bad fuel economy. The second issue is that the car drives fine u till I come to a full stop and the car revs go down to 800rpm the drops to 600rpms and come back up. I had a code on the car for bank 1 sensor sensor 1 sensor stuck on rich but have changed it and still have the problem also today I changed the map sensor and still having problems. Any help would be much appreciated.
Thanks
Thanks