Mercedes-Benz G500 Oxygen Sensor Replacement at your home or office.

Our mobile technicians offer services 7 days a week. Upfront and transparent pricing.

Get an upfront price

Service Area

Average rating from customers who
received a Oxygen Sensor Replacement.
Learn More

$461.25 - $551.85

Price range for all vehicles


YourMechanic Benefits

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.

Average rating from customers who
received a Oxygen Sensor Replacement.
Learn More


Oxygen Sensor Replacement Estimate for Mercedes-Benz G500

Mercedes-Benz G500 Oxygen Sensor Replacement costs $501 on average.

CarServiceEstimateShop/Dealer Price
2002 Mercedes-Benz G500V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1008.71Shop/Dealer Price$1260.36 - $1968.69
2002 Mercedes-Benz G500V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$847.51Shop/Dealer Price$1058.76 - $1646.11
2006 Mercedes-Benz G500V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$1008.71Shop/Dealer Price$1260.36 - $1968.69
2003 Mercedes-Benz G500V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$852.51Shop/Dealer Price$1062.60 - $1649.09
2008 Mercedes-Benz G500V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$847.51Shop/Dealer Price$1061.80 - $1651.44
2004 Mercedes-Benz G500V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$847.51Shop/Dealer Price$1056.72 - $1642.55
2007 Mercedes-Benz G500V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$847.51Shop/Dealer Price$1053.34 - $1636.63
2004 Mercedes-Benz G500V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$852.51Shop/Dealer Price$1061.35 - $1646.89
Show example Mercedes-Benz G500 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

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.

Excellent Rating


YourMechanic Mercedes-Benz G500 Service

Average Rating

4.9/5

Number of Reviews

15

Rating Summary
14
1
0
0
0
14
1
0
0
0

Chris

20 years of experience
1644 reviews
Chris
20 years of experience
Mercedes-Benz G500 - Door does not lock or open - Newport Beach, California
Chris is the best. He arrives early every time and is great.

Chris

20 years of experience
1644 reviews
Chris
20 years of experience
Mercedes-Benz G500 - Oil Change - Newport Beach, California
Chris is great. Super efficient and an expert

Chris

20 years of experience
1644 reviews
Chris
20 years of experience
Mercedes-Benz G500 - Car is shaking or vibrating - Newport Beach, California
Starting with an inspection, Chris knew within 30 seconds of looking under the hood what my car needed. This alone saves nth time vs. a service shop or dealer. Chris is truly connected to his expertise and willing to share it.. I sense him being challenged by our cars and isn't content until getting down to the bottom of it and then some. Again, cheers Chris !

Carlos

26 years of experience
272 reviews
Carlos
26 years of experience
Mercedes-Benz G500 - Serpentine/Drive Belt - Newport Beach, California
Very professional.

Excellent Rating


YourMechanic Mercedes-Benz G500 Service

Average Rating

4.9/5

Number of Reviews

15

Rating Summary
14
1
0
0
0
14
1
0
0
0
Red-stars EXCELLENT RATING ON
Number of Mercedes-Benz G500 services completed
165+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
800+
experts on our platform

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