Audi A6 Quattro Car Thermostat Replacement at your home or office.

Our certified mechanics come to you・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Logo-yelp
CUSTOMERS LOVE US ON YELP
4.5 out of 5 (550 reviews)
Icon-warranty_badge-02
SERVICES BACKED BY OUR
12-Month, 12,000-Mile Warranty
Icon-quote-hiw
Get a quote

Choose from 600+ repair, maintenance, and diagnostic services, backed by our 12-month, 12,000-mile warranty.

Icon-calendar-hiw
Book an appointment

Tell us when to meet you at your home or office. We’ll send one of our vetted, top-rated mechanics.

Icon-fixed-hiw
Get your car fixed

Continue with your day while our mechanic fixes your car onsite. You pay only after the job is done.

Car Thermostat Replacement Estimate for Audi A6 Quattro

Audi A6 Quattro Car Thermostat Replacement costs $470 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$153 to $745
Labor: $112 -$567
Parts: $41 -$178
Average Dealer price
$229 to 1020
Average Shop price
$187 to 831
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceEstimateShop/Dealer Price
2014 Audi A6 QuattroV6-3.0L TurboService typeCar Thermostat ReplacementEstimate$639.21Shop/Dealer Price$795.87 - $1033.89
2004 Audi A6 QuattroV8-4.2LService typeCar Thermostat ReplacementEstimate$569.45Shop/Dealer Price$709.03 - $880.65
2001 Audi A6 QuattroV8-4.2LService typeCar Thermostat ReplacementEstimate$595.95Shop/Dealer Price$728.85 - $895.46
2012 Audi A6 QuattroV6-3.0L TurboService typeCar Thermostat ReplacementEstimate$639.21Shop/Dealer Price$811.09 - $1060.52
2014 Audi A6 QuattroV6-3.0L Turbo DieselService typeCar Thermostat ReplacementEstimate$773.87Shop/Dealer Price$952.68 - $1259.15
2009 Audi A6 QuattroV6-3.0L TurboService typeCar Thermostat ReplacementEstimate$639.21Shop/Dealer Price$768.78 - $986.48
2002 Audi A6 QuattroV6-3.0LService typeCar Thermostat ReplacementEstimate$452.25Shop/Dealer Price$552.45 - $730.12
2003 Audi A6 QuattroV6-2.7L TurboService typeCar Thermostat ReplacementEstimate$630.12Shop/Dealer Price$782.87 - $968.40
Show example Audi A6 Quattro Car Thermostat Replacement prices

Car Thermostat Replacement Service

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.

GET A QUOTE FOR YOUR CAR
Backed by 12-month, 12,000-mile guarantee

Excellent Rating


YourMechanic Audi A6 Quattro Service

Average Rating

4.8/5

Number of Reviews

203

Rating Summary
185
12
1
1
4
185
12
1
1
4

Meet some of our expert Audi mechanics

Real customer reviews from Audi owners like you.

Danny

10 years of experience
269 reviews
Danny
10 years of experience
Audi A6 Quattro - Car is not starting - Philadelphia, Pennsylvania
On time and very professional

Stefan

16 years of experience
367 reviews
Stefan
16 years of experience
Audi A6 Quattro - Battery - Lafayette, California
This is the second time I have used Stefan and would use no one else. He is professional and friendly and could not be more accommodating. Your Mechanic is a lifesaver for people who work - they come to your home at your convenience.

Tien

22 years of experience
903 reviews
Tien
22 years of experience
Audi A6 Quattro - Oil Change - Oakland, California
Tien arrived on time and was early he was professional he was good to communicate with he did the job in a sufficient amount of time in less than a hour and I will highly recommend him and use him again. The only thing is I couldn't review my quote in my email afterwards but l called him and he gladly gave me the quote over the phone and explained everything clearly to me. Thanks Tien! ✌

Robert

19 years of experience
654 reviews
Robert
19 years of experience
Audi A6 Quattro - Brake Pads Replacement (Front) - Denver, Colorado
Like a barber once you find someone who does a good job you won't go elsewhere. This was my 2nd appointment with Robert, and I'm not looking elsewhere.
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceEstimateShop/Dealer Price
2014 Audi A6 QuattroV6-3.0L TurboService typeCar Thermostat ReplacementEstimate$639.21Shop/Dealer Price$795.87 - $1033.89
2004 Audi A6 QuattroV8-4.2LService typeCar Thermostat ReplacementEstimate$569.45Shop/Dealer Price$709.03 - $880.65
2001 Audi A6 QuattroV8-4.2LService typeCar Thermostat ReplacementEstimate$595.95Shop/Dealer Price$728.85 - $895.46
2012 Audi A6 QuattroV6-3.0L TurboService typeCar Thermostat ReplacementEstimate$639.21Shop/Dealer Price$811.09 - $1060.52
2014 Audi A6 QuattroV6-3.0L Turbo DieselService typeCar Thermostat ReplacementEstimate$773.87Shop/Dealer Price$952.68 - $1259.15
2009 Audi A6 QuattroV6-3.0L TurboService typeCar Thermostat ReplacementEstimate$639.21Shop/Dealer Price$768.78 - $986.48
2002 Audi A6 QuattroV6-3.0LService typeCar Thermostat ReplacementEstimate$452.25Shop/Dealer Price$552.45 - $730.12
2003 Audi A6 QuattroV6-2.7L TurboService typeCar Thermostat ReplacementEstimate$630.12Shop/Dealer Price$782.87 - $968.40
Show example Audi A6 Quattro Car Thermostat Replacement prices

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.

1-800-701-6230 · hi@yourmechanic.com