Excellent choice! I drive the 2.4 petrol 1996 and its a brilliant car, loads of space for 2 adults and 3 kids even with 2 car seats and a buggy.
I can manage mid 30s mpg on a good run 26 ish around town, the only fault with the largos is part's can be very difficult to find.
Welcome to the forum
That's most people's reaction to mpg including mine when i first bought it, i have drove 102 miles a day for the past 3 weeks, worse i got was 29mpg, but was a few hill's and mostly b road's