In my experience, sample size 1, Miele dishwashers are junk.
We bought a house in 2011 with a Miele dishwasher that was installed around 2007 (previous owners renovated the kitchen). It has broken down every 2 years or so. I think we've probably replaced almost every major part, thankfully under the home warranty that came with the house, and then under the home warranty we purchased when we rented the house out during a temporary relocation.
Contrast this to a builder-grade basic GE dishwasher from our old house (which was built around 1995 or so), which never failed. And whose interior got hot as an oven during the drying part of the cycle and actually dried the dishes. The only think the Miele has going for it is that it is quietest dishwasher I've ever used.