I can expect to get just over 100 miles to £20 but really does depend on how you drive it.
a full tank i can expect to get just under 300 miles too.
Works out to a soild 40mpg but the car has to be running right! I had coilpack/o2 sensor issues which was giving me about 25mpg!
All sorted now though.
As i don't really use the car on motorways most of not all my driving is down around town.
If you want the best mpg your better off getting the 1.4tdi
the 1.0 isn't bad for what it is, its quite torquey so getting to 40 is easy enough but it runs out of puff pretty fast past that so if your doing alot of motorway miles that might become tiresome.
they are pretty bullet proof though as they are simple engines.