The choice between the BMW M4 and Mercedes-AMG C63 S Coupe is an extremely difficult one. Not because both cars are excellent overall, but because they are so different.

Having previously compared the M3 against the C 63 S sedan, the reason for this two-door comparison was rather simple. The difference between the C63 S sedan and coupe is rather massive, both in terms of its suspension set-up and its general offering. Meanwhile, the M4 performance takes the level of hardcore from the Bavarian brand yet another step forward.

This comparison is broken up in to two parts, the first of which is the road test, followed next month by the track test. Usually we would conduct the road test and then ask a pro driver to do the track times, this time though, we decided to do it differently.
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https://www.caradvice.com.au/496863/bmw-m4-competition-v-mercedes-amg-c63-s-coupe-road-comparison/