For most 2013 Civics with the 1.8-liter engine, the engine oil capacity is about 4.4 quarts, which works out to roughly 1.1 gallons. The Civic Si, which uses a 2.4-liter engine, requires about 4.5 quarts or roughly 1.13 gallons. Use 5W-20 oil as recommended in Honda’s manuals, and verify exact specs for your trim.
Capacities by engine variant
The following figures reflect engine oil capacity with the filter installed, as specified by Honda for 2013 Civics.
- 1.8L 4-cylinder (non-Si): 4.4 quarts (with filter) — about 1.1 gallons
- 2.4L engine (Civic Si): 4.5 quarts (with filter) — about 1.13 gallons
Note: Actual fill can vary slightly if an alternative filter is used or if the engine is not allowed to rest before checking the level.
Oil type, grade and change intervals
Apart from capacity, using the correct oil grade and following a regular change schedule helps long-term engine health.
- Oil grade: 5W-20 (synthetic or synthetic-blend as recommended by Honda)
- Oil change interval: typically every 5,000–7,500 miles under normal conditions; more frequent under severe driving conditions
- Always replace the oil filter at each change
When in doubt, consult the owner's manual for the exact specification for your trim and climate, and ensure the level is checked on a level surface after the engine has cooled.
Bottom line
In practical terms, expect about 1.1 gallons of oil for a standard 2013 Civic and about 1.13 gallons for the Si. Use the recommended 5W-20 and adhere to the factory-recommended change intervals to maintain optimal engine health.
Summary: The 2013 Honda Civic’s oil capacity is roughly 4.4–4.5 quarts, equivalent to about 1.1–1.13 gallons, depending on the engine variant (1.8L vs. 2.4L Si). Always verify with the owner’s manual and perform changes with the correct filter and oil grade.