The 2021 Honda Civic uses 0W-20 full-synthetic motor oil for all engines, with an oil capacity that varies by engine type (about 3.7 quarts for the 2.0L and roughly 4.4 quarts for the 1.5L turbo). Here is a detailed guide on what oil to use and how much your Civic needs.
Oil type and viscosity
Honda specifies a 0W-20 viscosity for the 2021 Civic across its engine options, and the oil should meet API SN or newer and ILSAC GF-5 or newer certifications. Using Honda Genuine oil or an equivalent that meets these specs helps maintain performance and warranty compliance.
Recommended options are listed below to ensure you choose an oil that meets the car’s requirements:
- 0W-20 full-synthetic motor oil
- Oil that meets ILSAC GF-5 or later and API SN or later specifications
- Honda Genuine 0W-20 or an equivalent from a reputable brand that meets the above standards
Choosing the correct oil viscosity and specification protects the engine’s lubrication system, supports fuel efficiency, and aligns with Honda’s maintenance recommendations.
Oil capacity by engine
2.0L i-VTEC engine (LX, EX, Sport, Touring)
The 2.0L engine in the 2021 Civic typically requires about 3.7 quarts (3.5 liters) of oil with a filter, though exact capacity can vary slightly by model and production date.
- Approximately 3.7 quarts (3.5 liters) with filter
Always confirm the precise capacity in your owner's manual and verify the dipstick level after a change.
1.5L turbo engine (EX-L, Touring, Si)
The 1.5L turbocharged engine uses more oil, with an approximate capacity of about 4.4 quarts (4.2 liters) with a filter.
- Approximately 4.4 quarts (4.2 liters) with filter
As with the 2.0L engine, check the exact figure in the owner’s manual and monitor the dipstick during the refill process.
Maintenance considerations
For normal driving, Honda’s maintenance minder typically schedules oil changes at intervals that can be up to several thousand miles apart, depending on driving conditions. It’s best to follow the vehicle’s maintenance minder recommendations and use the correct 0W-20 oil to preserve engine health and warranty coverage.
Summary
In short, the 2021 Honda Civic requires 0W-20 full-synthetic motor oil for both the 2.0L and 1.5L turbo engines, with capacities ranging roughly from 3.7 to 4.4 quarts depending on the engine. Use oils that meet API SN or newer and ILSAC GF-5 or newer, preferably Honda Genuine 0W-20 or a certified equivalent. Always verify exact capacities and follow the maintenance minder recommendations for the best long-term performance.