Re: fuel consumption
I think its always bet to take the MPG from the car as a rough guide.
Best way is to fill your car till the pump cuts out. Reset the trip computer. Drive till the tank is quite low.
Fill up at the same pump and note the number of litres when it cuts out.
Times the litres by 0.22 to give gallons.
Divide the miles travveled on the trip computer by your gallons figure and compare with what the car says.
25MPG is not unheard of and doesnt neccearily mean that there is something wrong. As the others have said, it depends on route, acceleration and cruise speed.
(What Would Jesus Drive?)
Are we nearly there yet?