Thermostat Replacement Cost: Parts, Labor & Average Price

The thermostat is a valve in the cooling system that opens once the engine reaches operating temperature. When it sticks, the engine can run too hot or too cool, and a stuck-closed thermostat can lead to overheating. The part is often cheap. The price swings with how deeply it is buried in the engine and whether it comes bundled with a housing.

Figures below carry a check date of Oct 13, 2026. Sources disagree more on this repair than on most, and the explanation is below.

A compact or midsize sedan is listed at $160 – $350, and a domestic truck or SUV at $220 – $450. Diesel trucks run $400 – $800. European luxury vehicles are listed at $450 – $950 because the parts cost more and the labor takes longer.

Specific models show the same pattern. A Toyota Camry, Corolla, or RAV4 is listed at $180 – $320, and a Honda Civic, Accord, or CR-V at $200 – $350. A Ford F-150 with the 3.5L EcoBoost engine runs $320 – $480 because of a tighter engine bay and longer labor.

A traditional wax-pellet thermostat is a small part, listed at $20 – $50. Many German vehicles use electronic or map-controlled thermostats that cost $200 – $450 for the part alone, according to Empire Auto Protect. On some engines, the thermostat comes inside a housing assembly, which raises the parts bill.

Coolant is part of the job too. The shop drains some coolant to reach the thermostat and refills it, and some vehicles require a specific coolant type. If the plastic housing cracks during removal, a replacement housing adds to the parts total.

Labor depends on access. A front-of-engine thermostat on a common sedan is a quick job. A thermostat buried under the intake or in a tight V6 or V8 bay takes longer. Many shops also recommend replacing hoses, coolant, or the water pump at the same time because the labor overlaps. That can make sense on a high-mileage engine, but it adds to the bill, so ask the shop to explain each added item.

Dealerships charge more than independent shops. The same source lists a separate, higher range for dealerships, so ask your dealer for a written quote that fits your vehicle.

Two kinds of numbers circulate for this repair. One comes from independent-shop pricing across common vehicles, the other from national estimators that average all vehicles, including modern engines with expensive housing assemblies.

RepairPal's estimate is $609 – $709, and Kelley Blue Book's is $661 – $747, as reported by ThePricer. Those are higher than the $200 – $500 that Empire Auto Protect reports for an independent shop. RepairPal and Kelley Blue Book average parts and labor across many vehicles, including newer models where the thermostat sits in a pricey housing. An older, simple engine can land far below the national number, while a modern, hard-to-reach one can land above it.

The same article shows how much the model year matters. The article estimates that an older Toyota Camry costs several hundred dollars less for this job than a current one. Treat the national numbers as a ceiling for many vehicles and ask your shop for a quote that names your engine.

• Engine design and how hard the thermostat is to reach
• Standard or electronic thermostat
• Whether the housing is integrated and has to be replaced
• Coolant type and how much the job requires
• Dealer or independent shop labor rate
• Extra work such as new hoses or a water pump replaced at the same time
• Region, since labor rates differ

A thermostat stuck open can leave the engine slow to warm up, and a stuck-closed one can cause overheating. Other problems, like a failing water pump, radiator, or fan, cause similar symptoms. A technician can test the cooling system before replacing parts. If your temperature gauge climbs toward hot, pull over safely and have the car looked at. Driving on an overheating engine can lead to very expensive damage.

Some owners replace a thermostat at home on older, accessible engines. On newer engines with housings, sensors, and specific coolant requirements, the job gets more involved. Mistakes can leave air in the cooling system, which causes overheating. If you are not sure, ask a shop to do it and give you a written price first.

• Is the thermostat the actual cause, or is this a guess?
• Is the part a thermostat alone or a full housing assembly?
• Does the price include coolant and a pressure test?
• Which extra parts are you recommending, and why?
• What warranty covers the part and labor?
• Is this the total with tax and fees?