Welcome!
Can't comment on financing since the two countries prices and rates will vary greatly I imagine.
As for mileage, I average 24mpg mixed with spirited driving. If I behave and lay off the go pedal, I can easily get ~30mpg. For around town driving, lowest I got was ~19mpg in the summer with A/C always on full.
EDIT:
Forgot to add, I bought mine with 7 miles on the ODO, so my mileage sucked pretty bad (~17mpg mixed) for the first couple thousand miles. I didn't start getting mid 20mpg until after my first oil change I believe.