hi i am looking to buy a Estate car and i found a 77k mile Mondeo estate auto Ghix x with all the toys.

my question is what do i need to look for with these when viewing the car?
does any one have one?

have good/bad experience with it?
realistic fuel economy?

looked at 55 focus estate but just think ill get more car with mondeo?

or does anyone recomed a Diesel auto estate around £4.5k- 5.5k ?