Mercedes-Benz CLE-Class, C236 / A236 (USA / CAN)

Additional Notes

• The Mercedes-Benz CLE-Class C236/A236 coolant service interval is set at 124,000 miles or 120 months under normal use conditions, applying uniformly across all three variants listed for the 2023 model year.
• Each variant carries two separate cooling circuits: a primary system and a secondary system, each with its own distinct capacity figure.
• The CLE 300 4MATIC primary cooling system holds 12 liters, a notably lower figure compared to the primary systems of the CLE 450 4MATIC and CLE 53 AMG 4MATIC, which both hold 15.8 liters.
• The 3.8-liter difference in primary system capacity between the CLE 300 4MATIC and the two larger-displacement variants reflects the greater thermal management demands associated with higher-output engines.
• Despite the variation in primary system capacities, all three variants share an identical secondary cooling system capacity of 2.6 liters.
• A secondary cooling circuit of 2.6 liters is consistent with supplemental thermal management functions, such as cooling power electronics, turbocharger components, or hybrid-related systems, rather than the main engine block.
• The 120-month interval equates to a 10-year coolant service cycle, which is characteristic of modern extended-life coolant formulations designed to maintain corrosion inhibitor effectiveness over long periods.
• The CLE 450 4MATIC and CLE 53 AMG 4MATIC share identical primary and secondary coolant capacities of 15.8 liters and 2.6 liters respectively, indicating a common cooling architecture between the two higher-output configurations.