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

(11)

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

(11)

Oxygen Sensor Replacement Estimate for Audi Q3 Quattro

Audi Q3 Quattro Oxygen Sensor Replacement costs $327 on average.

CarServiceEstimateShop/Dealer Price
2016 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$343.19Shop/Dealer Price$430.99 - $639.27
2015 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$752.25Shop/Dealer Price$942.05 - $1462.54
2018 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$675.77Shop/Dealer Price$837.13 - $1293.28
2017 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$333.19Shop/Dealer Price$408.89 - $608.08
2017 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$675.77Shop/Dealer Price$837.15 - $1293.31
2016 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$675.77Shop/Dealer Price$846.45 - $1309.58
2018 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$680.77Shop/Dealer Price$842.00 - $1298.04
2015 Audi Q3 QuattroL4-2.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$338.19Shop/Dealer Price$423.64 - $630.14
Show example Audi Q3 Quattro Oxygen Sensor Replacement prices

Oxygen Sensor Replacement Service

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

(11)

Rating Summary
11
0
0
0
0
11
0
0
0
0

Anthony

20 years of experience
17 reviews
Anthony
20 years of experience
Audi Q3 Quattro L4-2.0L Turbo - Car is not starting - Stockbridge, Georgia
The experience was great. He came in triaged the issue and took care of the issue in no time flat. I would definitely recommend you guys to my friends and family.

Jose

9 years of experience
63 reviews
Jose
9 years of experience
Audi Q3 Quattro L4-2.0L Turbo - Oil Change - Burlingame, California
Amazing service

Torrieanto

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

John

7 years of experience
20 reviews
John
7 years of experience
Audi Q3 Quattro L4-2.0L Turbo - Oil Change - Riverview, Florida
Very good work.

Excellent Rating

(11)

Rating Summary
11
0
0
0
0
11
0
0
0
0
Number of Audi Q3 Quattro services completed
121+
services done by our mechanics
TOTAL NUMBER OF EXPERT Audi MECHANICS
700+
experts on our platform

Recent articles & questions

How Long Does an Oil Temperature Sensor Last?
Oil Oil is vital for engine operation – you can’t drive without it. Trying to run your car’s engine without oil would result in catastrophic damage. However, it’s just as important that the engine oil is monitored at all times....
P0337 OBD-II Trouble Code: Crankshaft Position Sensor A Circuit Low Input
P0337 means that the crankshaft is suffering because of low voltage. This could be due to sensor not being aligned properly or electrical problems.
How Long Does a Speed Timing Sensor Last?
Your Your car’s engine needs a considerable number of sensors in order to operate correctly. Oxygen sensors, the vehicle speed sensor, the mass airflow sensor – these are just a few of them. Your engine also needs a speed timing...

Sensor under intake manifold

Hi there, thanks for writing in about your 1993 Honda Civic del Sol. Your friend was probably referring to a failed MAP sensor. It does reside under the intake manifold and can cause mixture issues resulting in RPM surges. One...

Will my car turn on normally again once I fix the crankshaft position sensor?

A faulty crankshaft position sensor could cause hard starting but to determine if the sensor itself is faulty it has to actually be tested. Often, there will be a Diagnostic Trouble Code (DTC), that is generated by the car's computer,...

AC compressor only engages around 40% of the time

This is likely due to a faulty thermostat sensor which is responsible for controlling the temperature at which the AC compressor comes on. To determine this will require a series of tests. I would recommend having an expert from YourMechanic...

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