January this year a water pipe burst in the kitchen directly over a Belling Range cooker (some 13+ years old). Switched it off at the mains and awaited a visit from an electrician once the place had dried out.
The sparky that arrived had worked for Belling, was very familiar with their products. He checked it over, tested, declared it safe. He then added that if something had been wrong I would have been better to get parts replaced rather than a complete new oven - because Belling products these days are much less reliable.
I have no data on that, but I can't but believe someone in the industry.
Had almost the exact same thing happened here with our clothes dryer. Tech said it was worth replacing the motor on our 20-year-old model, even though it was 70% the price of a new dryer. Said the new ones just aren't built to last, and our restored one would last another 20 years.
We also still use the same 40 year old Coleman camping stove every summer, while other campers only get a few years out of much newer models.
But recently we found a happy exception, when we replaced our Contigo spill-proof coffee mugs (with a button you press to drink). They were always prone to the mechanism getting gross with milk scum, and were very hard to clean. The new models have an updated design that encloses the mechanism and keeps it much easier to keep clean. The metal seems heavier and high-quality, and the top lip has been folded over so it's not sharp like the old model. They've actually improved them a fair bit, for about the same price as the older ones.