Welcome to the Community, @annekerombouts!
You’re not alone with this sort of experience. We had a Miele induction cooktop that lasted about 7 years and then stopped working. I was told the controller had failed, and a new part was needed.
The quote from Miele for the new part was ~$1800 (plus callout fee and whatever time it would have taken to do the work).
We dumped the Miele and got a new Bosch with similar functionality for around half the price of the Miele part.
Other people in the Choice Community have complained about Miele’s after-sales service (not just spare part prices) as well. Eg, see this topic:
