Another big "Yes" vote from me.
Great fun - even with the extra ESP(ASR) fitted - which I was thankful for on a few cold wet/icy mornings.
To give you some idea of running costs, Roger at PowerItalia supplied and fitted cambelt and waterpump kit for £200.
I got an indicated 38/39mpg daily (20/25 mile cross country round trip) without trying, and got mid 40s a couple of times on longer runs. Drive her hard all the time (which is easily done) and you'll drop down to early 30s and then the tiny tank (holds less than 8 gallons) means more regular refills.
Mine was a little notchy in and out of third when I got her, but a quick gearbox oil change sorted that.
The only real pain I had with mine (which was like it when I purchased it) was the blistering steering wheel. I think mine must have been in a batch FIAT used spray on leatherette - the covering was so thin it came away like skin when the suntan peels! Apparently a common trait, I managed to sort mine with an unmarked one from a breakers for virtually no money - and the replacements much better and has not marked or peeled.
You can play around with the airfilter/exhaust etc., but the ECU appears to be locked down as none of the recognised remappers claim any success, and could not find anyone who had been successful in that area on the FIAT Forum either. My toying only extended to a Ragazzon rear box I got in the deal with the steering wheel.
One other thing to note regarding the exhaust - if you do look at one with an iffy back box, be aware that a standard one from FIAT is £210 and the only "aftermarket" standard mild steel box available is £300!
My ownership actually ended earlier this month - when I passed her down to my Son as his first car - although part of the deal was he has to leave the FCCUK sticker in the back window - it illuminates beautifully when the third brake lights up
We also had to change the exhaust (hence why I know the cost above) to get his premium down (utter madness) - so if you find one, you now know someone who has a Ragazzon rear box available