When I was a small child, my parrents had a Miele. It was there before I was born and it still was there when I moved out. Within 20 years of service there was only one fault. The programm selector broke and my dad had to fix it. After that the machine worked another 15 years without any issue. So overall the machine worked for 37 years with only one repair and has been replaced, still in working condition, with a new Miele due to efficiency (water and power consumption) reasons.
I decided for a Bosch and after 15 years it failed the first time. The carbon brushes of the motor were worn. A €5,- repair. After another 5 years the brushes were worn again due to the commutator beeing a bit rough from wear. While thinking about disassembling the motor and smoothing the commutator on the lathe I found another issue. The heating element was corroded to a point where I overall decided it's no longer worth to repair the damn thing. Again we went for a Bosch. Let's see how long this one will run without repair.