Audi Q3 Quattro Oxygen Sensor 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

(16)

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

(16)

Oxygen Sensor Replacement Service

How much does a Oxygen Sensor Replacement cost?

On average, the cost for a Audi Q3 Quattro Oxygen Sensor Replacement is $267 with $127 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2017 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$750.78Shop/Dealer Price$903.33 - $1352.86
2015 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$399.19Shop/Dealer Price$465.70 - $658.01
2017 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$399.19Shop/Dealer Price$464.35 - $655.64
2018 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$741.77Shop/Dealer Price$892.57 - $1340.80
2015 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$818.25Shop/Dealer Price$992.14 - $1500.71
2018 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$741.77Shop/Dealer Price$892.71 - $1341.05
2016 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$741.77Shop/Dealer Price$893.99 - $1343.29
2016 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$399.19Shop/Dealer Price$465.74 - $658.08
Show example Audi Q3 Quattro Oxygen Sensor Replacement prices

What is the Oxygen Sensor all about?

With each new model year, manufacturers are adding more oxygen sensors to better manage engine operation. Some high performance engines have an oxygen sensor for each cylinder as well as one for the rear of each catalytic convertor. The sensors are located either underneath the hood or underneath the car. The oxygen sensors are connected (screwed) to the exhaust pipe, either in front or back of the catalytic converter. The front (upstream) sensors measure the amount of oxygen in the exhaust system. The purpose of the front oxygen sensor(s) is to measure how rich or lean the gases are as the gases exit the combustion chamber. Depending upon whether the exhaust gas is lean (high in oxygen content) or rich (low in oxygen content), the amount of fuel entering the engine is adjusted by the engine management computer to try and maintain an ideal mixture that produces the lowest emissions output from the catalytic convertor.

Rear (downstream) sensors are located behind the catalytic converter. The purpose of the rear oxygen sensor(s) is to monitor the oxygen content of the exhaust gases leaving the catalytic convertor.

If one or more of the oxygen sensors are faulty, your car may not pass the emissions test. If you drive your car with a faulty oxygen sensor, you may get poor gas mileage and it can damage the catalytic converter.

Oxygen Sensor-MATROX-1

When replacing the oxygen sensor remember:

  • Many oxygen sensors are damaged by leaking oil or coolant. If that is the case, the cause of that leak needs to be identified and repaired, or else the replacement oxygen sensor will be damaged as well.
  • New vehicles require specific oxygen sensors, and not the universal sensors that were common prior to 1996.

How it's done:

  • Scan the computer in the car for codes.
  • Inspect for vacuum leaks and holes in the exhaust system.
  • Remove and replace the oxygen sensor if it is bad.
  • Check electrical connections.
  • Check for proper operation of oxygen sensors.
  • Clear diagnostic codes.
  • Test drive car.

Our recommendation:

Keep up with the tune-ups. If check engine light is on, don't drive the car too long without getting it inspected. If check engine light is flashing, pull over and get the car towed to avoid costly repairs. Ask the mechanic to inspect the vacuum hoses and leaks in the exhaust system. If the vacuum hose or exhaust system is leaking, it will display an oxygen sensor fault code. Replacing an oxygen sensor may not fix the problem.

What common symptoms indicate you may need to replace the Oxygen Sensor?

  • Check Engine light is on.
  • Car is getting poor gas mileage.
  • Emission test fails.

How important is replacing the oxygen sensor?

Your vehicle has multiple oxygen sensors, and they all help the car run optimally. The front sensors measure how much oxygen is in the exhaust stream to measure how rich or lean the gases leaving the gas chamber are. The rear sensors measure the oxygen content of the gases as they leave the catalytic converter. The oxygen sensors then relay this information to your vehicle’s electronic control unit, so that it can adjust as necessary. Because cars depend on an ideal fuel-to-air ratio to function optimally, the oxygen sensors are leaned on for engine performance. When your oxygen sensors fail your car will run less smoothly, get worse mileage, and have worse emissions.

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

(16)

Rating Summary
16
0
0
0
0
16
0
0
0
0

Torrieanto

13 years of experience
632 reviews
Torrieanto
13 years of experience
Audi Q3 Quattro L4-2.0L Turbo - Oil Change - Riverview, Florida
He is awesome. Fast work

Torrieanto

13 years of experience
632 reviews
Torrieanto
13 years of experience
Audi Q3 Quattro L4-2.0L Turbo - Oil Change - Riverview, Florida
Great service

Pardeep

22 years of experience
1277 reviews
Pardeep
22 years of experience
Audi Q3 Quattro L4-2.0L Turbo - Pre-purchase Car Inspection - Mountain View, California
Fast and timely. Super helpful and knowledgeable. good customer service skills.

Jimmi

28 years of experience
343 reviews
Jimmi
28 years of experience
Audi Q3 Quattro L4-2.0L Turbo - Oil Change - Orlando, Florida
Do's really good work.

Excellent Rating

(16)

Rating Summary
16
0
0
0
0
16
0
0
0
0
Number of Audi Q3 Quattro services completed
176+
services done by our mechanics
TOTAL NUMBER OF EXPERT Audi MECHANICS
800+
experts on our platform

Recent articles & questions

Symptoms of a Bad or Failing Manifold Temperature Sensor
Common signs include a rough idle, lack of power, high NOx production, and emissions test failure.
How to Replace an Exhaust Gas Recirculation (EGR) Temperature Sensor
Exhaust gas recirculation (EGR) temperature sensors monitor the EGR cooler's operation. One is on the exhaust manifold and one is near the EGR valve.
What Does the Rain and Light Sensor Warning Light Mean?
The rain and light sensor warning light indicates when there is an issue with the sensor system. It will remain deactivated until fixed.

No spark on cylinder 1 and 4

Before considering the replacement of the PCM, return the coil pack to the parts store and ask for it to be tested. It is not uncommon to receive a faulted new part. Spark has to travel from the coil (https://www.yourmechanic.com/services/ignition-coil-replacement),...

Car will not start when the engine is hot.

Hi there. If there is fuel and the engine will not start up when it is at operating temperature, then either the crankshaft position sensor is getting hot and not making a connection or the coolant temperature sensor (https://www.yourmechanic.com/services/coolant-temperature-switch-sensor-replacement) is...

When I speed up my service engine light flashes.

Hi there. If you engine is having a P0300 (https://www.yourmechanic.com/article/p0300-obd-ii-trouble-code-random-multiple-cylinder-misfire-detected-by-jamahl-walker) code for a random misfire, check the camshaft position sensor for any moisture and if the harness has any broken wires. If the sensor looks to be good, then remove...

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