Hi, I just wanted to see if anyone else has had a similar issue with really low mpg?

My Bravo had been doing average mpg until 2months ago it started to get lower, with me visiting the petrol station every few days.

My driving hasn't changed, and I travel more or less the same amount in a month.

Might there be a cause for this anyone knows of? Or any measures that might help improve?
Thanks

When was it last serviced?

Where do you buy your fuel from and what engine do you have and what mpg are you getting?