Buyers are urged to confirm the AMG Performance Exhaust System (the bimodal exhaust with the console button), which was not fitted to every car. Commenters flag a key year break: pre-2019 cars keep the loud 'snap/crackle' sport-exhaust behavior, while the 2019 European gas-particulate-filter mandate quiets the car 'A LOT.'
AMG Performance Exhaust option and the 2019 gas-particulate-filter change
Mercedes-Benz C43/C63 AMG (W205) · mechanical