Some Mercedes-Benz C63 AMG S owners report experiencing unique braking behavior, where the vehicle revs three times before stopping, as part of its performance characteristics. This behavior includes holding upshifts to the rev limiter and automatically downshifting when coming to a stop, which may be unexpected for some drivers. Additionally, while the C63 AMG S boasts a powerful 4.0-liter biturbo engine that contributes to its fuel efficiency in the high-performance segment, some owners may have concerns about the implications of such advanced performance features. The vehicle's advanced AMG carbon-ceramic braking system, while enhancing performance, may also lead to questions regarding maintenance and longevity.
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