Rat yes the shelf was a mistake, as it shows three in pic and it states it in specifications one is being sent out from Miele, they are contacting them Monday. It's being sent Royal Mail.
The dimensions are good IMO, it is the same as my old fridge. It's does stick out slightly from under work top but then my old fridge did slightly too.
Am very pleased with door storage, seems very, very strong in comparison with fridges in past with flimsy door storage. There is another space for an extra shelf but I can't see how it would work. While it would slot in, you wouldn't be able to put stuff in there bc of shelf above IYSWIM.
Am extremely pleased with it, seems very spacious despite the icebox. The icebox isn't too skinny either. Easily get a pizza in there and a box of ice creams. Or a few ready meals
and a bag of frozen peas if need be. So glad I have somewhere to freeze my DC's ice packs for lunch boxes now. I love my new Miele fridge 
The build quality of the fridge seems extremely high quality. The only negative is the salad crisper seems a bit flimsy. I can see it cracking in the future. Is that the sort of thing replaced under warranty or not? I have also had to contact the Co-Op again today when I realised there is only one large salad crisper, in the specifications on the website is states two but in the pic shows only one. The instruction booklet shows two small salad crispers, so it seems strange. The Co-Op are phoning me on Monday after contacting buyer/Miele about this and he said he didn't know how it would be resolved. I fear that the big salad crisper would be more likely to break than the two small ones as they would naturally carry less weight. Co-op customer service seems very helpful and polite. And they did delver within the 60 minute time slot they e.mailed last night.
If you wanted you're welcome to PM me your e.mail and I would be happy to send you 'real life pics' of the fridge!