Audi A3 Quattro 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

(26)

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

(26)

Car Thermostat Replacement Estimate for Audi A3 Quattro

Audi A3 Quattro Car Thermostat Replacement costs $407 on average.

CarServiceEstimateShop/Dealer Price
2018 Audi A3 QuattroL4-2.0L TurboService typeCar Thermostat ReplacementEstimate$506.87Shop/Dealer Price$621.69 - $922.05
2009 Audi A3 QuattroV6-3.2LService typeCar Thermostat ReplacementEstimate$393.11Shop/Dealer Price$496.25 - $668.75
2015 Audi A3 QuattroL4-2.0L TurboService typeCar Thermostat ReplacementEstimate$709.25Shop/Dealer Price$891.76 - $1292.62
2010 Audi A3 QuattroL4-2.0L TurboService typeCar Thermostat ReplacementEstimate$592.91Shop/Dealer Price$746.22 - $1059.73
2013 Audi A3 QuattroL4-2.0L TurboService typeCar Thermostat ReplacementEstimate$445.47Shop/Dealer Price$562.12 - $765.20
2011 Audi A3 QuattroL4-2.0L TurboService typeCar Thermostat ReplacementEstimate$592.91Shop/Dealer Price$746.34 - $1059.94
2009 Audi A3 QuattroL4-2.0L TurboService typeCar Thermostat ReplacementEstimate$607.91Shop/Dealer Price$760.62 - $1073.69
2006 Audi A3 QuattroV6-3.2LService typeCar Thermostat ReplacementEstimate$407.11Shop/Dealer Price$511.40 - $684.76
Show example Audi A3 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

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

(26)

Rating Summary
26
0
0
0
0
26
0
0
0
0

Juan

10 years of experience
47 reviews
Juan
10 years of experience
A3 Quattro 2015 - Brake Pads - Vallejo, CA
Was on time and did a great job.

Theodore

10 years of experience
1656 reviews
Theodore
10 years of experience
A3 Quattro 2015 - Loud squealing or rattling is coming from engine - Issaquah, WA
Very professional and knowledgeable.

Michael

25 years of experience
138 reviews
Michael
25 years of experience
A3 Quattro 2015 - Transmission Fluid Service - Indianapolis, IN
Professional service and on time. Would recommend him to anyone.

Pardeep

16 years of experience
1060 reviews
Pardeep
16 years of experience
A3 Quattro 2015 - Headlight Bulb - Milpitas, CA
Arrived on time (and communicated arrival time upfront!), quickly diagnosed the larger issue (how to get to the headlamp bulb), and quickly performed the work needed (even with the additional inconvenience of having to remove some of the front bumper support). Also found and fixed a missing screw that would never have been noticed normally. Highly recommended.

Excellent Rating

(26)

Rating Summary
26
0
0
0
0
26
0
0
0
0
Number of Audi A3 Quattro services completed
286+
services done by our mechanics
TOTAL NUMBER OF EXPERT Audi MECHANICS
700+
experts on our platform

Recent articles & questions

How to Replace an Exhaust Gas Recirculation (EGR) Valve
The exhaust gas recirculation (EGR) valve can cause drivability problems if it fails and should be replaced to avoid engine performance issues.
How to Replace a Speedometer Cable and Housing on Most Cars
The speedometer cable and housing go bad when the speedometer needle does not work, only works erratically, or there is squealing under the dashboard.
How to Choose the Right Body Shop
The right body shop repairs damage to your car after an accident for a fair price. A good shop uses high-quality paint and OEM replacement parts.

Can the secondary air injection relay cause my transmission to randomly not perform as it should?

Since the majority of today's (if not all of them) are now controlled by electronic transmission control modules that receive inputs from the ECM, any glitch in the functioning of the motor may potentially cause a domino effect resulting in...

issues after toyota repaired scon tc engine due to excess oil consumption test failure

The extended warranty (there was no recall) that Toyota has offered on your vehicle, in response to the excessive oil consumption issue, only includes the short block, consequently all cylinder head components are excluded. You should measure your oil consumption....

Engine makes really loud noise like a motorcycle 1998 Lincoln Navigator

Hi there - your symptom description suggests that an engine backfire in the exhaust has caused the muffler or catalytic converter to rupture. This would explain the noisier running and some of the smell you are experiencing. Check first to...

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