Safety Warning
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 CivicOil Type & Capacity
OEM spec from the factory service manual for the EX, 4D Hatchback variant.
Quick Answer
Oil Type
Genuine HONDA Motor Oil 0W-20 or API premium grade - SAE 0W-20 Detergent Oil
Capacity (w/ Filter)
3.70 QTS.
3.5 L
Variant
EX, 4D Hatchback
Note: You may also use synthetic motor oil if it is labeled with the API Certification Seal and is the specified viscosity grade.
Source: Factory service manual — 2021 Honda Civic EX, 4D Hatchback. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of oil does a 2021 Honda Civic take?
- The 2021 Honda Civic requires Genuine HONDA Motor Oil 0W-20 or API premium grade - SAE 0W-20 Detergent Oil. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the EX, 4D Hatchback configuration.
- How much oil does a 2021 Honda Civic need?
- The 2021 Honda Civic takes 3.70 QTS. (3.5 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2021 Honda Civic?
- Yes — synthetic oil that meets the Genuine HONDA Motor Oil 0W-20 or API premium grade - SAE 0W-20 Detergent Oil specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 2021 Honda Civic?
- Using oil that does not meet the Genuine HONDA Motor Oil 0W-20 or API premium grade - SAE 0W-20 Detergent Oil specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.