Sounds good,how much is it?
ive had mine for a couple of months now,and i love it so much! im 19 like yourself with the 1.6 model.
I would say if you after good fuel economy forget it because according to the computer i get an average of 28 mpg,it drinks oil as well but its worth every penny when i hear that glorius howl of the engine
My biggest complaint is the gearbox,gear change is rough unless you do it just right and give it plenty of revs dont know if its just my 147 or not but if i change into second for example it will make a clunk and jerk the car unless i engage the clutch just right.
Make sure you test drive it first,i had to have an engine swap because of a grinding noise when engaging clutch which turned out to be main bearing on the crankshaft or something,if id have payed more attention to it when test driving instead of messing with the air con i might have avoided it but it was replaced under warranty anyway.
Oh yeah while were at it test the air con works as well because mine doesn't which i failed to notice at the time and now i need to get it repaired.
Your back box may be a rust bucket like mine which is ready to fall off which is something you might want to consider.
Check no errors show up on the trip computer when starting the engine.
Thats all i can think of,Having an alfa romeo as someone on here said is cheap to buy expensive to run but always puts a smile on your face.And i really love my 147 to bits and i hope you do to.
Its truly a beautiful car inside and out,and turns heads more than most cars (or i may be imagining it