Maybe I've been lucky over the last 48years, but never had any reliability problems with any vehicle other than due to wear and tear.
Finding I am stranded somewhere, which could be in the middle of nowhere (Scottish Highlands) would be the last straw, although now I am wiser thanks to the forums, I wouldn't ever buy a Korean EV.
Build quality of most vehicles has declined over the years so now they are built to last the warranty period if that.
It isn't good enough for owners to have to rely on a warranty, they should not need to, and when they do, there is no excuse for not keeping parts in stock locally.
Sorry to say it but the "don't build 'em like they used to" really is nonsense. Everything has always been built to a price. I'm old enough to have had a few cars and the only car I've ever owned that didn't suffer from a component or build quality failure was a Toyota... and I only kept that a year.
Skoda Fabia - failed turbo at 2 years and 18k miles
Mondeo mk4 - premature DMF failure at 6 years and 50k miles
Mondeo mk3 - significant premature corrosion - back doors rotted through due to incorrect sealant used
Cavalier mk3 - significant premature corrosion - car needed welding up at 6 years old
Vectra mk1 - significant premature corrosion - read door strikers basically started to fall off - wouldn't cover under corrosion warranty because all car manufacturers are awful
Ka mk1 - Damn thing was rusting out of the showroom
Fiesta mk6 - myriad engine electrical problems
Xantia - back door leaks nobody seemed able to fix
C3 - body computer problems, door lock issues
e-niro - PTC heater failure
These are just the failures that shouldn't have occurred. Whilst it's frustrating we're still seeing some of these issues, especially given some manufacturers (Toyota being one) have shown how to build things properly, and to last, it just isn't true that things used to be better.
I am surprised nobody seems to be using AGM 12v batteries, that's what Toyota switched to and they don't have any issues reported.
<edit> also had a Skoda Fabia that didn't give me any issues but it was utterly dreadful and I didn't keep it very long.
<further edit> there are many more cars and issues I could list but they were more to do with previous neglect. Can't complain the engine's gone south if the previous owner never changed the oil