Audi A7 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

(49)

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

(49)

Oxygen Sensor Replacement Service

How much does a Oxygen Sensor Replacement cost?

On average, the cost for a Audi A7 Quattro Oxygen Sensor Replacement is $434 with $294 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2014 Audi A7 QuattroV6-3.0L Turbo DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1321.32Shop/Dealer Price$1619.20 - $2498.67
2015 Audi A7 QuattroV6-3.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$1069.91Shop/Dealer Price$1304.10 - $1999.45
2016 Audi A7 QuattroV6-3.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$981.19Shop/Dealer Price$1193.24 - $1822.08
2013 Audi A7 QuattroV6-3.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1069.71Shop/Dealer Price$1303.89 - $1999.12
2015 Audi A7 QuattroV6-3.0L Turbo DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1161.27Shop/Dealer Price$1420.92 - $2186.75
2017 Audi A7 QuattroV6-3.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$779.99Shop/Dealer Price$940.49 - $1417.49
2013 Audi A7 QuattroV6-3.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$734.71Shop/Dealer Price$885.17 - $1329.17
2012 Audi A7 QuattroV6-3.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1128.11Shop/Dealer Price$1363.59 - $2059.79
Show example Audi A7 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

(49)

Rating Summary
47
2
0
0
0
47
2
0
0
0

Khoa

21 years of experience
402 reviews
Khoa
21 years of experience
Audi A7 Quattro V6-3.0L Turbo - Oil Change - Redwood City, California
Khoa was an excellent mechanic. He explained everything very clearly and performed all services like a pro. I would use his services again for sure

Ben

42 years of experience
1589 reviews
Ben
42 years of experience
Audi A7 Quattro V6-3.0L Turbo - Engine or Transmission Mount Replacement - Houston, Texas
Ben was great. Although he was under quoted for the job at hand he did not complain or try to charge me more money. He got the job done in a reasonable amount of time. Added bonus his knowledge of cars is the only thing better than his collection of cars.

Travis

16 years of experience
165 reviews
Travis
16 years of experience
Audi A7 Quattro V6-3.0L Turbo - Cooling/Radiator Fan Motor - Dallas, Texas
Travis went above and beyond, considering the cold weather conditions

Mark

6 years of experience
13 reviews
Mark
6 years of experience
Audi A7 Quattro V6-3.0L Turbo - Supercharger Belt Replacement - Los Angeles, California
Awesome mechanic!

Excellent Rating

(49)

Rating Summary
47
2
0
0
0
47
2
0
0
0
Number of Audi A7 Quattro services completed
539+
services done by our mechanics
TOTAL NUMBER OF EXPERT Audi MECHANICS
800+
experts on our platform

Recent articles & questions

How to Replace a Brake Booster Vacuum Sensor
The brake booster vacuum pressure sensor is a vital part of power brake operation. A Check Engine Light or a hard brake pedal are signs of failure.
Symptoms of a Bad or Failing Low Oil Level Sensor
Common signs include inaccurate oil readings, the Oil Light coming on for no reason, the car not starting, and the Check Engine Light coming on.
Coolant Temperature Sensor Replacement Tips
Learn everything you need to know about how to replace a coolant temperature sensor with this guide from YourMechanic.

crankshaft position sensor problem

No it will not work. Do not try and install it since it will not fit or work. If you start a quote for a crankshaft position sensor replacement (https://www.yourmechanic.com/services/crankshaft-position-sensor-replacement) with YourMechanic, the right part will be found for your...

Gas gauge malfunctioning and Service Engine Light on

Thank you for asking about your 2006 GMC Sierra 1500 HD. More than likely, the problem is the fuel sensor, which is built into the fuel sending unit. This assembly is mounted in the gas tank. This is a common...

where is crankshaft position sensor located on 2012 vw cc 2.0

The crankshaft sensor is located near rear of motor on the left rear side of the engine.

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