Nothing wrong with both Siemens or Bosch (or Miele). But Miele's do break down too. My friend's recent Miele Twindos washingmachine's sensor died after only 2 years just outside guarantee, seems to be a fairly common problem with twindos machines. Expensive to repair too. 1400 Euro washing machine.
We have a Siemens iq500 dishwasher, an iq300 washing machine and dryer that run reliable for over 10 years. 3 appliances for about the same price as my friends Miele.
Also you get what you pay for and a lot of consumers can't afford 1400 euro for a washing machine anyway or pay for the expensive repairs. Comparing entry level with top tier hardware on brand suckability seems quite odd.
We bought a bag less vacuum 4 years ago.
The turbo brush for pet hair stats showing some wear but the whole thing works solid to this day. Even the flimsy feeling handle is still fine
Edit: EU - Germany