poor mpg

Hi, I’ve had my A2 for several years. He generally runs well but in the last year I feel his oil and petrol consumption has been very high. The gear box was broken though and just got replaced so could it have just. been caused by that? This one’s an SE 1.4. Not really what oil to put in the car...

Hiya guys just popped in to have a look around for info on related issues with replacement nox sensors and poor mpg. About 9 months ago I had a nox sensor replaced, since then my mpg has gradually declined. pre fault I was getting 45 mpg, now I'm getting 35 mpg. I haven't changed anything...