Mercedes-Benz C-Class, W206 / S206 / V206 (USA / CAN)

Additional Notes

• The Mercedes-Benz C-Class W206/S206/V206 coolant service interval is set at 124,000 miles or 120 months under normal use conditions, applying uniformly across all listed configurations.
• The C 300 and C 300 4MATIC primary cooling systems share an identical capacity range of 12 to 13.6 liters, reflecting the variable fill volume that can result from air pockets, partial drains, or differences in cooling circuit routing during a service fill.
• Both the C 300 and C 300 4MATIC carry a secondary cooling system capacity of 2.2 liters, a relatively modest volume that points to a smaller auxiliary circuit, such as one serving a turbocharger or ancillary heat exchanger.
• The C 43 AMG 4MATIC primary cooling system holds between 12.1 and 14 liters, a range that overlaps closely with the C 300 variants but extends slightly higher at the upper end, suggesting a marginally larger or more complex primary circuit.
• The C 43 AMG 4MATIC secondary cooling system is specified at 7.1 to 9.1 liters, a substantially larger secondary circuit compared to the 2.2-liter secondary system found in the C 300 configurations, indicating a significantly more extensive auxiliary cooling arrangement in the AMG variant.
• The C 63 AMG S E Performance shares the same primary capacity range of 12.1 to 14 liters as the C 43 AMG 4MATIC, despite being a distinct powertrain configuration introduced starting with the 2023 model year.
• The C 63 AMG S E Performance secondary cooling system also carries a 7.1 to 9.1-liter capacity range, matching the C 43 AMG 4MATIC secondary circuit specification exactly, which places both AMG variants in a separate category from the C 300 secondary circuit volume.
• The 120-month time limit on the coolant change interval equals a 10-year service life, meaning the mileage threshold of 124,000 miles and the time threshold operate as parallel limits, with whichever is reached first determining when service is due.