Carbon-ceramic brakes (CCB) are a costly, polarizing option: replacement is quoted near $15k, but owners note they last far longer and can be verified in-spec by the dealer's weight/sticker test per an MB bulletin. One owner works the math that steel brakes replaced twice over 60k miles roughly evens out against ceramics over a long ownership.
Carbon-ceramic vs steel brakes: cost and value
Mercedes-Benz E63 AMG (W212) · ownership