I've been an owner for 26 months, VZ Edition and covered just shy of 19000 miles (I think I would have covered more, but you'll see why later). No reliability issues with the car itself, as an example of automotive engineering, its amazing. However, throughout my ownership I have had numerous software glitches, issues and frustrations. Most have been relatively minor and the Forum has been a source of assurance that updates were coming and resolving things, but the most recent 'recall' in November took a massive turn for the worse.
In a nutshell, the 'upgrade and recall' completely screwed the software. On collecting the vehicle, all software settings had defaulted to factory - bit of a pain, but easy to work through, but then strange things started happening, from sensors failing and unfailing, the sunroof blind closing and opening, keyless entry not working and then working, through to a very scary full system crash whilst moving - this rendered the centre display blank and numerous alarms on the instrument cluster, as all systems that rely on the centre screen failed (blind spot monitoring, lane detection, crash detection, ACC etc., plus no SatNav, Phone, Audio etc.). I've experienced this 'crash' three times and it gets more scary each time.
The car has been back three times for resolution, but without success. I contacted Cupra who promised to support, but they went quiet for over a month, turns out their CRM software was swapped out late Jan and they couldn't see anything and couldn't respond or call - how ironic!! Cupra Spain have been contacted for support by the Dealer, still no response 5 weeks later.
So I guess if you have a 'good one' from a software perspective, then great, you can look forward to an outstanding car. If you get one (of the seemingly many) with software issues, you're in for an 'interesting' ownership experience and I would suggest you can't rely on Cupra Customer Services, or Cupra Spain. Hope you have the former, if you do get any software problems, I suggest you reject the car as soon as you can. I have forgiven failings far too many times with my car, but I suspect that is down to the car being great, when it all works. Also, the local Dealer (Fish Bros, Swindon) have been outstanding, despite their lack of support from Cupra, so a small positive. I won't be owning a VW Group car any time soon and I'm currently looking at what I can replace my
Formentor with.
I'm also still awaiting a replacement engine cover, removed as per the safety recall last summer. Cupra can't even resolve this in a reasonable timescale, and they can't blame the lack of semiconductors as they just need to redesign the fixings so it can't come loose!
As an aside, according to Cupra Customer Services, Forums like this one are just full of a noisy 'minority' and should be avoided/disregarded!
Good luck with your new car and I sincerely hope you avoid the software minefield