Where is the serial number on a Miele washing machine?

Open the door; the data plate is above the porthole opening. It shows the model and serial number.

Where the rating plate is1
  1. Around the door opening, on the rim of the drum

Source: Miele – Washing machine operating and installation instructions (en-GB, M.-Nr. 12 716 440)

How old is my Miele washing machine?

Miele doesn't publish how to read the production date from the serial number, and we haven't found a reliable rule. Ask the manufacturer's support with the model and serial number from the rating plate.

All Miele appliances