Kia K5, DL3 (USA / CAN)

Coolant capacity & service interval

Kia K5, DL3 (USA / CAN) coolant capacity ranges from 8 to 9,7 liters. Service intervals include 24000 miles/ 24 months, 30000 miles/ 24 months, and 120000 miles/ 120 months. The data covers 12 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
K5 2.5 GDI (2025- )
  • Use: Normal
  • Capacity 9,7 liter
  • Change 30000 miles/ 24 months
K5 2.5 GDI (2025- )
  • Use: Initial service
  • Capacity 9,7 liter
  • Change 120000 miles/ 120 months
K5 2.5 GDI AWD (2025- )
  • Use: Normal
  • Capacity 9,7 liter
  • Change 30000 miles/ 24 months
K5 2.5 GDI AWD (2025- )
  • Use: Initial service
  • Capacity 9,7 liter
  • Change 120000 miles/ 120 months
K5 2.5 T-GDI (2025- )
  • Use: Normal
  • Capacity 8,8 liter
  • Change 24000 miles/ 24 months
K5 2.5 T-GDI (2025- )
  • Use: Initial service
  • Capacity 8,8 liter
  • Change 120000 miles/ 120 months
K5 1.6 T-GDI (2020-2024)
  • Use: Normal
  • Capacity 8 liter
  • Change 24000 miles/ 24 months
K5 1.6 T-GDI (2020-2024)
  • Use: First change only
  • Capacity 8 liter
  • Change 120000 miles/ 120 months
K5 1.6 T-GDI AWD (2020-2024)
  • Use: Normal
  • Capacity 8 liter
  • Change 24000 miles/ 24 months
K5 1.6 T-GDI AWD (2020-2024)
  • Use: First change only
  • Capacity 8 liter
  • Change 120000 miles/ 120 months
K5 2.5 T-GDI (2020-2024)
  • Use: Normal
  • Capacity 8,8 liter
  • Change 24000 miles/ 24 months
K5 2.5 T-GDI (2020-2024)
  • Use: Initial service
  • Capacity 8,8 liter
  • Change 120000 miles/ 120 months

Additional Notes

  • Cooling system capacity on the Kia K5 varies by engine. The 1.6 T-GDI holds 8 liters, the 2.5 T-GDI holds 8.8 liters, and the 2.5 GDI holds 9.7 liters. These figures represent the total cooling system fill volume, covering the engine block, cylinder head passages, radiator, and hoses.
  • The AWD variants of the 1.6 T-GDI (2020-2024) share the same 8-liter cooling system capacity as the front-wheel-drive version of the same engine, indicating no meaningful difference in coolant volume between the two drivetrain configurations for that engine.
  • The 2.5 GDI (2025- ) carries the largest cooling system capacity in the lineup at 9.7 liters, shared equally between the standard and AWD variants. A larger displacement naturally-aspirated engine typically requires more coolant volume to manage heat across a greater combustion surface area.
  • Normal-use coolant change intervals differ between engine families. The 1.6 T-GDI and 2.5 T-GDI are both specified at 24,000 miles or 24 months under normal conditions, while the 2.5 GDI carries a longer normal interval of 30,000 miles at the same 24-month time limit.
  • The 1.6 T-GDI uses the term "first change only" to describe the extended initial service interval, while the 2.5 T-GDI and 2.5 GDI use "initial service" for the same concept. In both cases, the interval is 120,000 miles or 120 months, reflecting factory-fill coolant formulated for long-life initial use before transitioning to the standard replacement schedule.
  • All engine configurations across the 2020-2025 K5 share the same extended initial coolant service interval of 120,000 miles or 120 months, regardless of displacement, forced induction, or drivetrain layout.
  • The 2.5 T-GDI specification applies to both the 2020-2024 and 2025- model year ranges with identical capacity and interval values. The 8.8-liter capacity and the 24,000-mile or 24-month normal change interval remain unchanged across both periods for that engine.

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