How much does it cost to replace a thermostat in a Honda Civic?
In most cases, expect about $120 to $340 in the United States for a thermostat replacement on a Honda Civic, including parts and labor. If you do the work yourself, the cost can drop to roughly the price of parts only, typically $20–$70, though proper coolant handling and tool access are essential.
What affects the price
The total price depends on several factors, including the exact Civic model and year, whether coolant service is needed, the shop you choose, and regional labor rates. The following figures break down typical costs and what drives them.
Parts cost estimate
What you'll pay for the thermostat itself and the necessary fittings is usually the primary variable in the total bill.
- Thermostat unit: commonly $15–$60 depending on OEM vs aftermarket and engine variant.
- Gasket or seals: about $5–$15.
- Coolant: small bottle, typically $5–$15 (or more if you need a larger coolant top-up).
- Auxiliary components (hoses, clamps, or sensor if present): $5–$20 if needed.
Note: Some Civic models use dual or more complex cooling components; pricing can vary if a special kit is required. Parts pricing can vary by supplier and whether you choose OEM or aftermarket parts.
Labor cost estimate
Labor charges vary by region and shop type, and the time to do the job affects the total. The following captures typical ranges.
- Independent mechanic or small shop: about $75–$150 per hour; job typically 1–2 hours.
- Franchise or dealership: about $100–$180 per hour; job could take 1–3 hours depending on access and vehicle model.
- Total labor estimate range: roughly $75–$540 depending on hours and rate.
Always obtain a written estimate that separates parts and labor to compare quotes easily. If the cooling system requires a flush or additional coolant work, expect extra costs.
DIY considerations
If you have basic mechanical skills and the right tools, replacing a thermostat can be a feasible DIY project for many Civic models. Your main savings come from parts, typically $20–$70, but you’ll still need to buy coolant and, ideally, a new gasket. Keep in mind that improper coolant handling or leaks can lead to engine damage, so consult a service manual and take precautions before starting.
Summary
For most Honda Civics, a thermostat replacement performed by a shop generally falls in the $120–$340 range, with DIY parts-only costs around $20–$70. Final pricing depends on the engine variant, regional labor rates, whether coolant service is needed, and any additional parts or services. Always get a detailed, itemized quote before proceeding.
