Miele WCD120 W1 Washing Machine (Littleham, Exmouth EX8)

The machine is approx 6-7 yrs old so still has at least 10yrs life left. Owned by my Mother who used it for low temp, short washes.
The rubber seal has some black on it which I'm sure can be cleaned off with baking powder/vinegar or I think a new seal costs £25.
The machine costs £599-£899 depending on the website.
The photo is from a website, not the actual machine.