The quick answer: if your Civic has the automatic transmission, expect about 9 quarts of ATF (Honda DW-1) for a full fill, while the manual transmission holds roughly 1.8–2.0 quarts of gear oil. Exact figures depend on whether you’re performing a simple drain-and-fill, a complete flush, or a full filter change.
For a 2012 Honda Civic, the transmission fluid capacity varies by transmission type and service method. The following guidance reflects common dealership specifications and owner‑manual recommendations as of 2024, but you should verify with your VIN and service manual for precision.
Automatic transmission (2012 Honda Civic)
Before listing typical capacities, note that the automatic 5-speed transmission in this model uses Honda ATF DW-1. The numbers below cover common service scenarios.
- Total system capacity with a full new filter: about 9.1 quarts (roughly 8.6 liters).
- Drain-and-fill (pan drain only, no full flush): typically 4–5 quarts are drained and replaced.
- Full flush (fluid circulates through cooler lines and the torque converter): can require about 9–10 quarts.
In practice, most DIY or shop jobs plan on having around 9 quarts of ATF DW-1 on hand to cover a full fill or flush, plus a little extra for topping up after a test drive.
Manual transmission (2012 Honda Civic)
For the 2012 Civic with a manual transmission, the fluid is a gear oil (not ATF) and the capacity is smaller. Use the manual’s recommended spec and service procedure.
- Typical capacity for a complete drain-and-fill: about 1.8–2.0 quarts (roughly 1.7–1.9 liters).
- If sealing components are replaced or more thorough work is done, the amount may vary slightly, but it generally remains near 2 quarts.
When planning a manual transmission fluid change, budget around 2 quarts of the correct gear oil and verify the exact spec in your owner’s manual or service bulletin.
What fluid to use
Automatic transmissions
Use Honda ATF DW-1 for the 2012 Civic automatic transmission. Do not substitute Dexron VI or other fluids unless a dealer explicitly approves the alternate spec for your VIN, as using the wrong fluid can affect shifting and transmission longevity.
Manual transmissions
Use the Honda-recommended manual transmission fluid (MTF) that meets Honda specs (commonly Honda MTF or equivalent compliant fluid, often rated for 75W-90 GL-4). Engine oil or gear lube not designed for manual transmissions should not be used.
Tips for planning and performing a change
Before you start, confirm the exact capacity for your specific model and VIN, and pull the correct fluid type and a compatible filter if applicable. If you’re not sure, consult the owner’s manual or a Honda service advisor. When topping off, do so gradually and check the level on a level surface with the engine warm to avoid overfilling.
Summary
For a 2012 Honda Civic, the transmission fluid quantity you need depends on the transmission type. Automatic transmissions require about 9 quarts for a full fill (including a new filter) or about 4–5 quarts for a drain-and-fill; a full flush can require roughly 9–10 quarts. Manual transmissions require about 1.8–2.0 quarts of the appropriate gear oil. Always verify exact capacity with the owner’s manual or a Honda service bulletin and use the recommended fluid: ATF DW-1 for automatics and the specified MT fluid for manuals. Keep some extra on hand for topping up after the service.