The non-Si 2012 Civic with the 1.8-liter engine takes about 3.7 quarts (3.5 liters) of engine oil with a filter, while the high-performance Si model with the 2.4-liter engine requires roughly 4.8–5.0 quarts (4.6–4.7 liters) with a filter. Always verify with the owner’s manual or the dipstick.
Engine options and oil capacities
The 2012 Civic offered two main engine configurations in the U.S.: the 1.8-liter inline-four (non-Si) and the 2.4-liter inline-four used in the Civic Si. Oil capacity depends on which engine you have and whether you’re performing a full change or topping up.
Below is a quick capacity breakdown for the two engines commonly found in 2012 Civics.
- 1.8L engine (non-Si) — about 3.7 quarts (3.5 L) of oil including a new filter
- 2.4L engine (Si) — about 4.8–5.0 quarts (4.6–4.7 L) including a new filter
Note: These figures represent a full oil change with a new filter. If you’re topping up, you’ll usually add smaller amounts and recheck the level with the dipstick to avoid overfilling.
Maintenance tips
Refer to the owner's manual for the exact specification for your trim and production date, and use the recommended oil viscosity. When in doubt, have a qualified mechanic confirm the proper capacity and perform the change to ensure the engine remains properly lubricated.
Summary
In brief, the 2012 Honda Civic takes roughly 3.7 quarts (3.5 L) of oil for the 1.8L engine and about 4.8–5.0 quarts (4.6–4.7 L) for the 2.4L Si engine when performing a full oil change with a new filter. Always double-check the exact amount for your specific vehicle and maintenance date using the owner's manual or dipstick.