I'm beginning to think that my fuel economy is not as good as it was. I have a Rover 620 Ti and I have a habit that every time I fill a tank I zero the trip counter. Normally, I get an average of about 330 miles to the tank, but I'm sure it seems to be getting lower.. that is, I haven't been hammering it, but it's nearly at the half way mark and it's only done about 120 miles! What might cause that?
Thanks Bigus