2025 Honda Civic Si
Vehicle Specs & Maintenance Data
The 2025 Honda Civic Si maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Honda Civic Si.
For oil changes, the 2025 Honda Civic Si takes 0W-20 Full Synthetic motor oil with a capacity of 3.7 quarts. Brake fluid type is DOT 3, the recommended coolant is Blue Type 2 Coolant (OAT), and transmission fluid is Honda MTF. Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Honda Civic Si, torque the lug nuts to 80 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2025 Honda Civic Si uses 0W-20 Full Synthetic motor oil (3.7 qt capacity), requires lug nuts torqued to 80 ft-lbs, takes DOT 3 brake fluid.
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