2018 Kia Optima coolant capacity
The 2018 Kia Optima holds about 6.2 to 8.1 quarts of coolant, depending on the engine - the full cooling-system capacity when cold.
Key takeaways
- The 2018 Kia Optima holds about 6.2 to 8.1 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 |
|---|---|---|
| 1.6 CRDi DPF | 8.1 qt | 7.7 L |
| 1.6 T-GDI | 6.9 qt | 6.5 L |
| 1.7 CRDi DPF | 7.5 qt | 7.1 L |
| 2.0 CVVL | 6.2 qt | 5.9 L |
| 2.0 Plug-in Hybrid | 7.1 qt | 6.7 L |
| 2.0 T-GDI | 7.7 qt | 7.3 L |
When refilling, add coolant to the marked level rather than forcing in the full figure. Source.