I have this strange issue where i get code for my o2 but i still manage to do about 40mpg. is this what causes my mpgs to stay this low? My car is a vw polo from 2000 with 1.4 mpi engine.
error - Album on Imgur
i will be doing a roadtrip soon and i dont want to kill the cat
EDIT: sorry for any mistakes i made. im trying to save as much money as possible and im trying to learn