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Want to learn more about Car Thermostat replacements?

Read our short guide with information on costs, symptoms and more.

What does a Thermostat do?

The thermostat is part of the cooling system in every car. It consists of a metal valve that regulates the amount of coolant that flows to the engine. It maintains the engine's temperature at a constant and optimal level. If the engine runs hot the valve in the thermostat opens and lets more coolant flow to the engine (from the radiator) in other cases it stays closed.

What does a thermostat replacement involve?

  • Mechanic will read the ECU to see if there are any related fault codes.
  • Mechanic will inspect the thermostat and the cooling system.
  • If necessary, the mechanic will replace the thermostat.
  • Mechanic will close the cooling system and refill the system with engine coolant.
  • Mechanic will run the engine and, if necessary, test drive the car.
  • Mechanic will make any adjustments if necessary.

Can I replace a car thermostat myself?

Unless you are a qualified mechanic with the required skills, training and equipment to do the job, we strongly recommend a car thermostat replacement is only carried out by a professional mechanic. ClickMechanic can help get you a vetted and local mechanic to carry out the work. Just enter your postcode and your car's registration number at the top of this page and select the work needed to get an instant fixed price up front.

What are the signs of a bad thermostat in your car?

  • When the 'Check Engine' light is on.
  • When the 'Engine Temperature warning light is on.
  • When the engine runs at a higher temperature than usual.
  • When the car's heater has failed.

How long does it take to change a thermostat in a car?

On average a car thermostat replacement will usually take around 1 hours, but can take anywhere from under 1 to over 2 hours. The time that the job takes will depend on a range of factors. For example, your vehicle's make and model, year, as well as other factors. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.

How often should I replace the thermostat?

Seeing that the thermostat is a component that is especially prone to wear it should always be serviced as and when stipulated in the guidelines set out by your car's manufacturer.

Do I need to replace the thermostat in my car?

Over time problems can occur with the thermostat due extensive use. The thermostat is in use when the engine runs with the valve opening and closing continuously, to keep the engine at the ideal temperature. It is one of the most common components in the cooling system to fail and can, moreover, lead to the engine overheating and potentially suffer severe engine damage.

Additionally, it can also get clogged up by dirt in the engine coolant meaning that less coolant can circulate through the system, causing the engine to overheat as well. Should you experience an issue like this or those listed earlier, it is advisable to have the thermostat inspected as soon as possible and, if necessary, have it replaced.

Can I drive with a faulty thermostat?

If you suspect there is any issue with your thermostat or there are concerns about its age or condition, book an inspection with a professional mechanic immediate effect and do not drive the vehicle. Driving with a faulty thermostat can lead to the engine overheating or lead further complications on your vehicle and potentially engine damage.

How much does it cost to replace thermostat housing?

Cost for a thermostat housing depends on your location, car and what parts your car's manufacturer recommends using for the replacement. Find out what you could save by having your thermostat housing replaced by ClickMechanic by selecting your car at the top of this page!

Do I need to replace thermostat housing?

You should only replace the thermostat housing if it has been diagnosed by a professional mechanic that it needs replacing. If you are in doubt on whether the thermostat needs replacing check with a mechanic who can advise on the next steps.

What causes thermostat housing to leak?

Typical thermostat housing leaks can include:

  • Thermostat gasket is leaking
  • Thermostat housing has failed

What is the average lifespan of a thermostat?

In most cases, thermostats can last at least 10 years. This can be lower depending on factors such as how you drive and external factors.

Can I drive with a broken thermostat?

It is not recommended to drive with a faulty or broken thermostat as it can cause serious damage to the engine, and can lead to an overheating engine.

What happens if you don't replace a broken thermostat?

If you notice a dashboard warning light with a thermometer in two flowing waves, this could indicate a problem with the thermostat and engine temperature.

Ignoring this warning light could lead to the engine overheating and cause serious damage to the engine. It is recommended to stop as soon as it is safe to do so when the warning light illuminates so as to prevent any further damage to the engine.

Is a faulty thermostat an MOT failure?

A faulty thermostat in itself may not result in an MOT failure, however, it can result in other issues with associated car parts that could be observed by the MOT tester as a fault such as overheating or emissions fail. If you notice that the thermostat is faulty, it is best to get it checked and fixed as soon as possible to avoid risking an MOT failure.

How much does it cost to replace my car's thermostat?

Cost for a car thermostat replacement is on average £150, with prices ranging from £95 to £215. Ultimately, the cost of replacing the thermostat depends on your car and what parts your car's manufacturer recommends using for the replacement. Find out what you could save by having your thermostat replaced by ClickMechanic by selecting your car at the top of this page!

Check out the ClickMechanic price for a car thermostat replacement, and find out what you would pay at a franchise dealer. We use industry standard data & millions of data points so you know what you should be paying. These estimates may include Engine coolant/antifreeze and Cooling system thermostat. We have car thermostat replacement prices for 45 different manufacturers.

Name ClickMechanic Click Mechanic average Franchise dealer estimate

Alfa Romeo

£138 £150 - £263 Get exact price

Audi

£140 £131 - £289 Get exact price

Austin

£41 £51 - £78 Get exact price

BMW

£142 £156 - £250 Get exact price

Chevrolet

£98 £60 - £179 Get exact price

Chrysler

£241 £111 - £526 Get exact price

Citroen

£109 £110 - £215 Get exact price

Dacia

£166 £235 - £271 Get exact price

Daewoo

£75 £51 - £132 Get exact price

Daihatsu

£75 £114 - £170 Get exact price

Dodge

£104 £130 - £154 Get exact price

Fiat

£89 £84 - £166 Get exact price

Ford

£96 £109 - £223 Get exact price

Honda

£70 £81 - £129 Get exact price

Hyundai

£59 £76 - £115 Get exact price

Isuzu

£104 £132 - £132 Get exact price

Iveco

£105 £144 - £180 Get exact price

Jaguar

£111 £125 - £213 Get exact price

Jeep

£142 £46 - £293 Get exact price

Kia

£52 £65 - £111 Get exact price

Land Rover

£191 £144 - £652 Get exact price

LDV

£70 £80 - £133 Get exact price

Lexus

£72 £109 - £121 Get exact price

Mazda

£82 £112 - £166 Get exact price

Mercedes-Benz

£144 £162 - £260 Get exact price

MG

£112 £144 - £286 Get exact price

MINI

£126 £108 - £269 Get exact price

Mitsubishi

£64 £61 - £121 Get exact price

Nissan

£77 £91 - £137 Get exact price

Peugeot

£126 £93 - £221 Get exact price

Porsche

£179 £215 - £259 Get exact price

Proton

£60 £75 - £111 Get exact price

Renault

£136 £115 - £319 Get exact price

Rover

£154 £177 - £428 Get exact price

Saab

£97 £78 - £178 Get exact price

SEAT

£99 £108 - £203 Get exact price

Skoda

£96 £107 - £193 Get exact price

Smart

£197 £231 - £364 Get exact price

Ssangyong

£70 £66 - £136 Get exact price

Subaru

£57 £58 - £124 Get exact price

Suzuki

£91 £78 - £180 Get exact price

Toyota

£67 £98 - £123 Get exact price

Vauxhall

£140 £89 - £237 Get exact price

Volkswagen

£111 £107 - £241 Get exact price

Volvo

£118 £98 - £228 Get exact price

Prices could not be created for 35 models. Show ∨

  • Microcar
  • Metrocab
  • Hummer
  • Reva
  • Asia
  • TVR
  • Ferrari
  • Morgan
  • Buick
  • Lamborghini
  • Pontiac
  • Carbodies
  • DS
  • Mitsubishi Fuso
  • Moskvich
  • Bentley
  • Cadillac
  • Ford US
  • Aixam
  • Daimler
  • FSO
  • Maybach
  • Rolls-Royce
  • Santana
  • Tata
  • Great Wall
  • Piaggio
  • Perodua
  • Infiniti
  • Aston Martin
  • Lada
  • Lancia
  • Lotus
  • Maserati
  • London Taxi's International

Estimates on repair costs, such as the above results for a car thermostat replacement, are created by combining data from multiple third-party sources. The actual cost of using your local repair providers may be outside of the estimated range. We provide estimates on repair costs for information only and accept no liability for any inaccuracies or errors. If you think an estimate is incorrect, please contact us to let us know.

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Recent Car Thermostat replacement quotes

These recent quotes were taken from our quote engine which uses third-party industry standard data on repair times, along with a live parts retailer, and a regional labour rate to build an accurate free quote. We are constantly improving our quote engine, so please let us know if a price seems incorrect.

£77.73

Thermostat replacement

SEAT Leon
Halifax
£89.16

Thermostat replacement

Fiat 500
Halifax
£126.33

Thermostat replacement

Volkswagen Polo
Ashington
£83.33

Thermostat replacement

Mazda Mazda3
Hartlepool

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