2026 Mercedes-Benz C-Class coolant capacity
The 2026 Mercedes-Benz C-Class holds about 8.5 to 11.7 quarts of coolant, depending on the engine - the full cooling-system capacity when cold.
Key takeaways
- The 2026 Mercedes-Benz C-Class holds about 8.5 to 11.7 quarts of coolant total, depending on engine.
- This is the full cooling-system fill with the engine cold.
- Refill to the marked level, and use the coolant type your owner's manual specifies.
| Engine | Capacity | Liters |
|---|---|---|
| C 300 205.048/148/248/348/448 | 8.5 qt | 8 L |
| C 300 4MATIC 205.049/349/449 | 9.5 qt | 9 L |
| C 400 4MATIC 205.006/266/366/466 | 11.5 qt | 10.9 L |
| C 63 AMG 205.086/286//386/486 | 11.7 qt | 11.1 L |
When refilling, add coolant to the marked level rather than forcing in the full figure. Source.