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DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Honda CivicCoolant Type & Capacity
OEM spec from the factory service manual for the EX, 4D Hatchback variant.
Quick Answer
Coolant Type
HONDA Long-Life Antifreeze/Coolant Type 2
Capacity
1.30 GALS.
4.92 L
Variant
EX, 4D Hatchback
Note: 50/50 with distilled water.
Change including the remaining 0.46 qt. in the reserve tank.
Source: Factory service manual — 2021 Honda Civic EX, 4D Hatchback. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of coolant does a 2021 Honda Civic take?
- The 2021 Honda Civic requires HONDA Long-Life Antifreeze/Coolant Type 2. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the EX, 4D Hatchback configuration.
- How much coolant does a 2021 Honda Civic hold?
- The 2021 Honda Civic cooling system capacity is 1.30 GALS. (4.92 L).
- Can I use universal coolant in my 2021 Honda Civic?
- It is strongly recommended to use coolant that meets the HONDA Long-Life Antifreeze/Coolant Type 2 specification. Universal coolants may not provide the correct corrosion protection for your engine's materials.
- What happens if I use the wrong coolant in my 2021 Honda Civic?
- Using coolant that does not meet the OEM specification can cause corrosion, gasket damage, and overheating. Always verify the correct coolant type before topping off or flushing the system.