The GSi is returning 18.8mpg average at the moment and I was wondering why. It is overdue a service only done 8k in it since the last VX one but it will be booked in soon.
Do you think the service would bring the mpg up or is there something else I should look into??
Reason I'm asking is that I could go back to VX (full VX service history atm) or as I have all the service parts I was going to get an independant to do it. Just wondering if VX would put it on their machine and check it all over ie the map & fueling.