This bloke bought a brand spanking new Mercedes C63 AMG Biturbo . Had it a few weeks , drove it in a bit of rain and it was written off (if you watch the follow up vids with the saga that took place with insurance etc ) . Written off !!!!!!... He then got another one with dodgey electronic connections I believe and then other less crucial issues thankfully for him . Maybe not to the extent of VW's engines and Ford's ridiculously stupid new transmission failures but it puts it into perspective that AMG Merc's have expensive fails too.
https://www.youtube.com/watch?v=UKaKeEizu5I ..
Apparently on further reading with fails on these C63's the brakes are also very problematic and regularly give out high pitched squealing way too often and not easy to fix .