Kia K5 coolant capacity
Total cooling-system coolant capacity for the Kia K5, by generation and engine, in quarts and liters.
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| Years | Coolant | Buy |
|---|---|---|
| 2021-2026 | Phosphate-based ethylene glycol coolant | Shop |
Sources: Kia Owner's Manual - Recommended Lubricants and Capacities (2024 model), 2019 Kia Optima Owner's Manual, dealer-hosted copy of official Kia manual. Shop links go to Amazon, and we may earn a commission at no extra cost to you.
| Engine | Capacity | Liters |
|---|---|---|
| 2.5L 4-cyl | 9.6 qt | 9.1 L |
| 2.5L 4-cyl turbo | 9.3 qt | 8.8 L |
| Engine | Capacity | Liters |
|---|---|---|
| 1.6L 4-cyl turbo | 8.5 qt | 8 L |
| 2.5L 4-cyl turbo | 9.3 qt | 8.8 L |
| Engine | Capacity | Liters |
|---|---|---|
| 1.6L 4-cyl turbo | 4 qt | 3.8 L |
| 2.5L 4-cyl turbo | 4.1 qt | 3.9 L |
Capacity is the full cold-fill for the whole system. Top up to the marked level and use the coolant type specified in your owner's manual. Source.