The rumors of what Mercedes-AMG plans to do with the C63 just won't quit, and this time Autocar is reporting that the turbocharged four-cylinder engine is being swapped out for a turbo inline-six.

The 2025 Mercedes-AMG GT63 Pro is the lineup's most track-capable model, and it starts at $197,050. The GT63 Pro features a 603-hp twin-turbo 4.0-liter V-8, standard all-wheel drive, and a host of ...