Oxygen Sensor 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
How does YourMechanic work?    
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.

Oxygen Sensor Replacement Estimate for Mercedes-Benz R350

Mercedes-Benz R350 Oxygen Sensor Replacement costs $299 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$127 to $603
Labor: $70 -$144
Parts: $57 -$459
Average Dealer price
$207 to 1086
Average Shop price
$155 to 724
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
CarServiceYourMechanic PriceShop/Dealer Price
2013 Mercedes-Benz R350V6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$299.24Shop/Dealer Price$381.96 - $572.94
2012 Mercedes-Benz R350V6-3.0L Turbo DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$557.35Shop/Dealer Price$704.72 - $1089.38
2011 Mercedes-Benz R350V6-3.0L Turbo DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$557.35Shop/Dealer Price$704.64 - $1089.24
2010 Mercedes-Benz R350V6-3.0L Turbo DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$249.84Shop/Dealer Price$320.29 - $474.28
2010 Mercedes-Benz R350V6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$188.43Shop/Dealer Price$243.47 - $351.37
2006 Mercedes-Benz R350V6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$188.43Shop/Dealer Price$243.44 - $351.32
2006 Mercedes-Benz R350V6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$360.52Shop/Dealer Price$465.16 - $675.56
2008 Mercedes-Benz R350V6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$355.12Shop/Dealer Price$458.35 - $664.65
Show example Mercedes-Benz R350 Oxygen Sensor Replacement prices

Oxygen Sensor Replacement Service & Cost

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

Keep in mind:

  • 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 this service?

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 Oxygen Sensor Replacement service at your home or office.

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

Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

395 reviews
Tien
18 years of experience
Tienwas friendly he was accurate he explained everything to me and with his experience and his professionalism coupled with his pleasant demeanor, I do not prefer that anyone else works on my vehicle. Tien is my mechanic with your mechanic thank you very much have a great day. By the way I been telling all my friends about Yur Mechanic.
1999 MERCEDES-BENZ C230 - WIPERS ARE NOT WORKING INSPECTION
Want Tien's expert advice? Ask your question now. Its free!
283 reviews
Patrick
27 years of experience
2010 MERCEDES-BENZ R350 - 50 POINT INSPECTION
Want Patrick's expert advice? Ask your question now. Its free!
145 reviews
James
26 years of experience
I was very happy with the job done.
2002 MERCEDES-BENZ SLK230 - BRAKE PADS REPLACEMENT (REAR)
Want James's expert advice? Ask your question now. Its free!
132 reviews
Rodney
31 years of experience
This was my first time using a at home service for my car , after reading the comments from other customers I decided to give it a try , and oh my gosh I was totally shocked by the professionalism that Rodney provided he showed up early which I was fine with cause I am a tickler for being on time and on time he was , so that was a big check mark , professionally dressed with company logo uniform . Not only did he find out the problem with my car but also did a inspection of the entire car , let me know that my tires were low and recommended that as soon as i get it running go and get them inflated and told me what pressure for front and the rear . So yes I was very happy with Rodney and the service he provided and the overall attention of the company putting customers first . Looking forward to seeing Rodney next week for the repairs .
2005 MERCEDES-BENZ ML350 - CHECK ENGINE LIGHT IS ON INSPECTION
Want Rodney's expert advice? Ask your question now. Its free!
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
CarServiceYourMechanic PriceShop/Dealer Price
2013 Mercedes-Benz R350V6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$299.24Shop/Dealer Price$381.96 - $572.94
2012 Mercedes-Benz R350V6-3.0L Turbo DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$557.35Shop/Dealer Price$704.72 - $1089.38
2011 Mercedes-Benz R350V6-3.0L Turbo DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$557.35Shop/Dealer Price$704.64 - $1089.24
2010 Mercedes-Benz R350V6-3.0L Turbo DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$249.84Shop/Dealer Price$320.29 - $474.28
2010 Mercedes-Benz R350V6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$188.43Shop/Dealer Price$243.47 - $351.37
2006 Mercedes-Benz R350V6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$188.43Shop/Dealer Price$243.44 - $351.32
2006 Mercedes-Benz R350V6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$360.52Shop/Dealer Price$465.16 - $675.56
2008 Mercedes-Benz R350V6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$355.12Shop/Dealer Price$458.35 - $664.65
Show example Mercedes-Benz R350 Oxygen Sensor 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