Replacing a car thermostat generally costs between $200 and $500 for parts and labor, though it can range from $150 to over $1,000 for certain luxury/foreign vehicles or complex engine setups. The specific price depends on your vehicle's make and model, as well as the mechanic's hourly labor rate.
The average cost for car thermostat replacement is $661 to $747.
A thermostat for a 2017 Hyundai Elantra generally costs between $15 and $40 for the part itself. If you purchase a full thermostat housing assembly or premium OEM unit, the price typically ranges from $80 to $250. Professional replacement will bring the total cost to around $350 to $400.
Replacement of thermostat unit
Upgrading to a new thermostat (unit + installation) typically runs $140 to $350, depending on model and complexity. There is also a broader range—$80 to $440—with variations based on location and type of thermostat.
Whether you can drive with a bad thermostat depends entirely on how it has failed. Because a thermostat acts as a valve to regulate coolant flow, its failure state dictates the severity of the problem.
How can you tell if a thermostat is bad?
A car thermostat typically lasts 10 years or about 100,000 miles. Often, they do not need to be replaced on a strict schedule and will function for the entire lifespan of the vehicle unless they become stuck, corroded, or leak.
Replacing a car thermostat takes 30 minutes to 2 hours for a professional mechanic, or 1 to 3 hours for a DIYer.
Yes, you can absolutely replace a car thermostat yourself. It is a very manageable DIY project that usually takes about 30 to 60 minutes and requires basic hand tools, a replacement thermostat, a gasket, and coolant.
A bad car thermostat usually fails by getting stuck open or closed. Key warning signs include a temperature gauge that spikes into the red (stuck closed) or stays near cold, poor cabin heating, fluctuating temperatures, or a "Check Engine" light.
The average cost for a Hyundai Elantra Thermostat Replacement is between $351 and $403. Labor costs are estimated between $91 and $133 while parts are priced between $260 and $270.
A 2017 Hyundai Elantra typically lasts between 150,000 and 250,000 miles. Assuming an average of 12,000 to 15,000 miles driven per year, this translates to a lifespan of 13 to 17 years, provided it receives consistent, routine upkeep.
Every car manufacturer, including Hyundai has developed its own coolant or requires a specific coolant that is unique to individual years and models.
After replacing your car's thermostat, you must properly refill the coolant, bleed out any trapped air pockets, and check for leaks to prevent engine overheating.
Replacing the thermostat on a 2015 Hyundai Sonata typically costs between $200 and $450 in total. This includes roughly $20 to $60 for the thermostat part and $180 to $400 for labor, depending on your specific engine type and whether you visit an independent mechanic or a dealership.
Whether you're handling routine maintenance or diagnosing an overheating issue, replacing a thermostat is a straightforward but essential repair.
Labor to replace a car thermostat typically costs between $100 and $300, making the total job generally run from $150 to $500.
Whether you can drive depends entirely on how the thermostat is broken.
The thermostat in your car acts as a valve that regulates coolant flow to keep your engine at a stable operating temperature. When it fails, the valve typically gets stuck in either the closed or open position, causing distinct symptoms.
Disconnect the old thermostat and unscrew the mounting plate. Check the new thermostat instructions for compatibility and wiring guidance. Connect the labeled wires to the new thermostat. Attach the new mounting plate to the wall.
labor: A plain thermostat might run $15–$60; an integrated or electronically assisted assembly can run a few hundred. Labor often falls between ~0.8 and 2.5 hours, but hidden fasteners, seized hardware, or extra trim removal add time.
On average a car thermostat replacement will usually take around 1 hour, but can take anywhere from under 1 to over 2 hours. In some cases, it can take longer if it has resulted in a blown head gasket which will also need replacing.
Replacing the thermostat on a 2017 Jeep Cherokee typically costs between $250 and $450 in total. This generally breaks down to $35 to $120 for the thermostat and housing assembly, $30 to $60 for fresh coolant, and $180 to $270 for labor at a local mechanic or dealership.
You likely need a thermostat replacement if your home temperature feels inconsistent, the display screen is unresponsive, or your heating and cooling system cycles on and off frequently. Upgrading is also recommended if you notice sudden spikes in energy bills without a change in usage.
Your car's thermostat is considered old after about 100,000 miles or 10 years.