This might seem a little frivolous for consumer advice but many people do care about pronouncing a name correctly and worry about appearing foolish if they get it wrong. Especially if going into a shop and asking for the brand by name.
For years I always pronounced it, “mealy” and so did everyone else I had heard say it.
I sent an email to Miele. The reply advised it is pronounced, “meal-a”. Unfortunately the quality of this information didn’t live up to the high standards I expect from Miele because the letter “a” can of course be pronounced as it is in, “apple”, or as in, “ape”.
For a while I adopted, “Mealay” which is undoubtedly posher, but eventually I discovered that the correct way to pronounce Miele -at least by Miele themselves in the UK is – “meal-a” as in apple.