from memory - i've been out of the fiat fold for a while now - later manual abarths / prestigios suffered from severe deletion of options, the early cars - whilst some say are problematic - may have a full complement of electrics, leather, lcd display etc. later cars do without the in-dash lcd screen and from the ph2 revision, some are minus even leather / connect nav.
for me, part of the cars appeal was kit Vs price. (ie, connect nav etc "makes" it a bit different).
fuel consumption? i got 22-25mpg from my '54 Prestigio which included a lot of motorway driving at times. my standard daily commute is 30 mixed miles....i had to fill it twice a week.
onsider what is said above, it's a 2.4 5pot and will never get high 30's in mpg, and insurance / servicing will be accordingly.
personally, i would have another one tomorrow if it was cheap enough and offered lots of toys that are rare on a sub £3k "modern" car.
select carefully it could be a good - not great - car, but buy a dog and you'll forever be in dread of the "beep beep"...