Audi S8 Car Thermostat Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(13)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(13)

Car Thermostat Replacement Service

How much does a Car Thermostat Replacement cost?

On average, the cost for a Audi S8 Car Thermostat Replacement is $219 with $86 for parts and $133 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2002 Audi S8V8-4.2LService typeCar Thermostat ReplacementEstimate$849.72Shop/Dealer Price$1040.06 - $1279.17
2015 Audi S8V8-4.0L TurboService typeCar Thermostat ReplacementEstimate$1161.40Shop/Dealer Price$1457.21 - $2107.94
2013 Audi S8V8-4.0L TurboService typeCar Thermostat ReplacementEstimate$1161.40Shop/Dealer Price$1457.19 - $2107.91
2007 Audi S8V10-5.2LService typeCar Thermostat ReplacementEstimate$585.14Shop/Dealer Price$733.66 - $1078.01
2017 Audi S8V8-4.0L TurboService typeCar Thermostat ReplacementEstimate$1161.40Shop/Dealer Price$1394.15 - $1997.58
2009 Audi S8V10-5.2LService typeCar Thermostat ReplacementEstimate$579.78Shop/Dealer Price$727.06 - $1067.47
2008 Audi S8V10-5.2LService typeCar Thermostat ReplacementEstimate$594.14Shop/Dealer Price$742.15 - $1086.12
2016 Audi S8V8-4.0L TurboService typeCar Thermostat ReplacementEstimate$836.92Shop/Dealer Price$1048.83 - $1442.30
Show example Audi S8 Car Thermostat Replacement prices

What is an engine cooling system thermostat and how does it work?

The car's engine cooling system thermostat is a small valve within a cooling system passageway that opens and closes in response to the temperature of the circulating engine coolant. When your car is first started and the coolant is cold, the valve in the thermostat will be in the closed position, circulating the coolant flow only within the engine instead of flowing to the radiator, which allows the engine to warm up fast, promoting fuel efficiency, low emissions, and reduced engine deposits. Once the engine coolant reaches the design temperature, usually around 195 degrees, the valve will open and close as you drive in order to maintain a coolant temperature typically between 195 to 225 degrees Fahrenheit.

Thermostat

When to consider replacing the engine cooling system thermostat:

  • Engine overheats. A thermostat with the valve stuck closed is a common cause of engine overheating. However, since there are other causes of overheating, a mechanic will thoroughly inspect the cooling system prior to condemning the thermostat. Since it is usually not known how badly the engine overheated, the mechanic will also try to determine if there is evidence that the cylinder head gasket was blown. If so, it would be repaired prior to replacing the thermostat.
  • Temperature gauge reads too low or too high. Thermostats can get sticky, causing the engine temperature to stray from the optimal range. Your dash-mounted temperature gauge will notify you of this malfunction.
  • Cooling system repairs. All thermostats eventually fail. Therefore, if the cooling system is already open for major repairs, such as water pump or radiator replacement, it is recommended to install a new thermostat simply as insurance against future breakdown.

How do mechanics replace the engine cooling system thermostat?

  • Once the engine is completely cold, the radiator cap is loosened and enough coolant is drained from the radiator so the coolant level is below the thermostat housing.
  • The thermostat housing is removed and the thermostat and gasket are extracted. Note that some cars have more than one cooling system thermostat and both might need replacement.
  • All mounting surfaces on the thermostat housing are cleaned of old gasket material. A new gasket is applied and the thermostat is re-installed in the correct orientation and with the temperature sensing cylinder facing downward towards the engine.
  • The thermostat housing bolts are tightened to original equipment manufacturer (OEM) specifications using a calibrated inch-pound torque wrench.
  • The cooling system is refilled with the appropriate coolant type and the system is fully bled of all air.
  • The car engine is run until the normal operating temperature is reached, and while taking precautions with the hot coolant, the coolant level is rechecked while confirming there is flow through the radiator — either visually or with an infrared temperature gun. This will confirm the thermostat is open. Finally, the engine is checked for leaks.

Is it safe to drive with an engine cooling system thermostat problem?

No. If it has been determined that there is a thermostat problem, it should be repaired right away. Failure to do so can cause substantial and costly damage to the engine.

When replacing the engine cooling system thermostat keep in mind:

  • Engine overheating due to causes other than a faulty thermostat, will themselves damage a thermostat. Therefore, always replace the thermostat if the engine overheats, even if the thermostat was not the initial cause of the overheating.
  • The thermostat should be replaced anytime you have major work done on the coolant system. It is convenient and costs little during such repairs and insurance against future breakdown.
  • OEM thermostats are the best ones to use and you can request your mechanic to install only the OEM thermostat. Dealer supplied, OEM thermostats are sometimes more costly but are generally higher quality and specifically engineered for your car.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Audi mechanics

Real customer reviews from Audi owners like you.

Excellent Rating

(13)

Rating Summary
13
0
0
0
0
13
0
0
0
0

Tien

23 years of experience
903 reviews
Tien
23 years of experience
Audi S8 V8-4.2L - Brake Pads Replacement (Front, Rear) - Newark, California
Knowledgable, Chill to be around, looked out for me on the back brakes. Definitely recommend.

Theodore

16 years of experience
1587 reviews
Theodore
16 years of experience
Audi S8 V8-4.2L - Pre-purchase Car Inspection - Bellevue, Washington
Theodore was very methodical and complete, Very professional. I highly recommend his services.

Diego

21 years of experience
564 reviews
Diego
21 years of experience
Audi S8 V8-4.2L - Oil Change - Glendale, Arizona
Personable, prompt and skilled. I would recommend

Brikk

18 years of experience
389 reviews
Brikk
18 years of experience
Audi S8 V10-5.2L - Brake Pads Replacement (Front, Rear) - Charlotte, North Carolina
Very nice and knowledgeable. Great service!

Excellent Rating

(13)

Rating Summary
13
0
0
0
0
13
0
0
0
0
Number of Audi S8 services completed
143+
services done by our mechanics
TOTAL NUMBER OF EXPERT Audi MECHANICS
700+
experts on our platform

Recent articles & questions

Top 10 Scenic Drives in Iowa
When you think about Heartland America, Iowa likely comes to mind. The state is known for its rural farmlands with fields of corn and small communities that seemingly spring up out of nowhere. While this is definitely a part of...
How to Check Your Tires for Air Leaks
Your Your tires go through a lot of abuse on the road in order for your ride to be smooth, quiet, comfortable, and safe. Taking care of your tires is essential in order to get as many miles out of...
How to Get Smog Technician Certified in North Carolina
Automotive technician jobs include smog certified emissions inspectors. In North Carolina, you need to work at a licensed inspection station.

Engine shuts down when stopped at red lights

I don't have the repair information for your vehicle because it is so new. Since you can put the vehicle in park and start the vehicle, my guess is that you are also cycling the key. The fact that the...

Grinding noise coming from the front.

Hi - with the water you see under your vehicle and the grinding noise is a good indication that your water pump needs to be replaced (https://www.yourmechanic.com/services/water-pump-replacement). The grinding noise is the bearing starting to fail. Trembling and shaking while...

My tsc light is on and car is shaking

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com