Miele, Bosch, and Speed Queen do the old-school engineering based on failure analysis and have basically the same reliability as the super-simple machines from the 70s and 80s, so 20 years is a common lifespan with outliers in the 30- and 40-year range. If you adjust for inflation, you find that the super-simple machines from the 70s and 80s cost basically the same as machines from these more expensive brands, so if you care about filling landfills with broken appliances, you should probably consider purchasing them and supporting the business model.

No one would make cost-engineered stuff that fails just outside the warranty if people didn't buy it.

We had a Samsung dishwasher. Took exactly 5 years for it to spill water to the floor.

Now we have a Miele, as we do have their laundry machine and fridge already. The laundry machine is soon 20 years old, been doing laundry around 5-6 times every week and works still like new. The fridge is supposedly built by Liebherr. It feels really high quality: the door handle feels nice and locks the door properly. There are multiple different temperature areas that hold the temperature quite steady.

The dishwashers have certain tiers. I don't know if it makes sense to pay for the TwinDos detergent system: you can wash dishes without filling detergent. The detergent is proprietary and quite expensive. Sadly if you want to connect the dishwasher to your home assistant, that feature is only in the most expensive models. The door that opens automatically when the program is done is great though. You can do the eco program which is quite slow, but it spends the last hours just the door open, and in the morning you have clean and dry dishes with minimal water and energy use.

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