Had one for four years and have no horror stories to report.
The diesel is much better than the petrol (which I had), has a little more grunt and much better fuel economy.
It’s not permanent 4×4, but uses some viscous drive thingy (technical term that) which engages the rear wheels when the front start to slip. Worked great on the farm and was surprisingly capable in the snow.
I can only speak for the petrol, but I found the gearing was very different to the standard Panda. 70mph and the engine sounded like it was crying out for another gear. But for bumbling about the country lanes and into town, it was perfect.
Unless you really need the 4×4 ability, the Panda 100 I once got as a courtesy car would be a much better overall car. More refined, better ride and much more sensible gearing.