My 2014 Fiat Panda 4x4 Antarctic TA is on 45k miles, no major issues since we bought it over 2 years ago now, it had around 32k miles on it, trying my hardest not to put too many miles on it and keeping it below 50k is going to be a struggle as I just enjoy driving it and hate leaving it sat on the drive, did that for around 6 months and it caused my first little issue with it, ie non starting!
Service book is fully stamped up, it had been freshly serviced at the time of purchase and I've had it serviced twice since owning it, so it's basically had 3 services in the last 2 years / 13,000 miles.
I think regular oil changes are the key to a healthy TA and trouble free long term ownership.