The 2018 Honda Civic with a 2.0-liter inline-four engine takes about 4.7 quarts (4.4 liters) of engine oil when performing a full change with a new filter, using 0W-20 full synthetic oil.
In this article we break down the official capacity, the recommended oil type, and practical steps for filling and checking the oil correctly. The figures reflect Honda’s specification for the 2018 Civic 2.0L; always consult your owner’s manual or a dealer for region-specific guidance.
Capacity and oil specification
Key figures you should know before an oil change:
- Engine oil capacity (with new filter): 4.7 quarts (4.4 liters).
- Recommended oil grade: 0W-20, full synthetic.
- Reference: 2018 Honda Civic with 2.0 L inline-four engine.
Note: This capacity is for a full oil change using a new filter. If you replace only part of the oil, you will use less, and you should always verify level with the dipstick after filling.
Choosing the right oil
Using the recommended weight and type helps protect the engine and maintain efficiency.
Oil type and viscosity
Honda specifies 0W-20 full synthetic oil for the 2.0 L Civic. This viscosity supports cold starts and fuel efficiency while providing adequate protection at operating temperatures.
Oil-change intervals and maintenance
Follow your manual for replacement intervals, which typically depend on miles driven and driving conditions. The capacity discussed above assumes a complete change with a new filter.
DIY oil-change steps and tips
For those performing their own oil change, these steps help ensure a proper fill and safe procedure.
- Prepare: gather 4.7 quarts of 0W-20 full synthetic oil and a new oil filter.
- Warm up the engine briefly, then turn off and wait 5–10 minutes for oil to settle.
- Drain old oil by removing the drain plug; replace the oil filter with a new one.
- Fill with new oil gradually, checking the level with the dipstick as you approach the full mark.
- Start the engine, idle a few minutes, then recheck for leaks and oil level; top off if necessary.
Conclusion: A careful, measured fill using the correct oil type yields a full 4.7-quart capacity with a new filter, but always verify with the dipstick after filling.
Summary
For the 2018 Honda Civic's 2.0 L engine, plan to replace about 4.7 quarts (4.4 liters) of 0W-20 full-synthetic oil when performing a full oil change with a new filter. Always confirm the oil level with the dipstick after filling, and consult the owner's manual for exact specifications for your vehicle and region.