Oxygen Sensor Replacement Estimate for Mercedes-Benz S320

Mercedes-Benz S320 Oxygen Sensor Replacement costs $231 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$210 to $259
Labor: $70 -$80
Parts: $140 -$179
Average Dealer price
$373 to 451
Average Shop price
$258 to 307
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CarServiceYourMechanic PriceShop/Dealer Price
1997 Mercedes-Benz S320L6-3.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$234.27Shop/Dealer Price$300.75 - $443.01
1995 Mercedes-Benz S320L6-3.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$255.78Shop/Dealer Price$327.76 - $486.24
1996 Mercedes-Benz S320L6-3.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$250.94Shop/Dealer Price$321.63 - $476.43
1994 Mercedes-Benz S320L6-3.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$255.78Shop/Dealer Price$327.71 - $486.17
1995 Mercedes-Benz S320L6-3.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$263.66Shop/Dealer Price$337.51 - $501.82
1999 Mercedes-Benz S320L6-3.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$221.17Shop/Dealer Price$284.36 - $416.79
1998 Mercedes-Benz S320L6-3.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$221.87Shop/Dealer Price$285.39 - $418.46
1998 Mercedes-Benz S320L6-3.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$231.23Shop/Dealer Price$297.06 - $437.13
Show example Mercedes-Benz S320 Oxygen Sensor Replacement prices
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Parts required for a Mercedes-Benz S320 Oxygen Sensor Replacement

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97 reviews
Shaun
11 years of experience
Excellent service by Shaun. I would strongly recommend him
2008 MERCEDES-BENZ C300 - OIL CHANGE
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87 reviews
Chris
21 years of experience
Perfect!
2001 MERCEDES-BENZ E320 - WINDOW MOTOR / REGULATOR ASSEMBLY REPLACEMENT (PASSENGER SIDE REAR)
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75 reviews
Brikk
13 years of experience
Normally I do not confess to auto techs that I spent 40 years as a GM Service Manager and Service Advisor. BUT, Brikk was so pleasant and likable, our conversation was that of cars. He not only fixed my problem, but was sure to check other items on my car that I had not complained about. As I always tell everyone, there is but one thing that surpasses great customer service, and that is MORE of it...Thank you Brikk for a job well done, and if I ever need your service again, consider your phone ringing...Thanks
2007 MERCEDES-BENZ S550 - CHECK ENGINE LIGHT IS ON INSPECTION
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49 reviews
Jim
7 years of experience
Excellent service -- very fast and effective!
1999 MERCEDES-BENZ ML320 - SERPENTINE/DRIVE BELT REPLACEMENT
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All about Oxygen Sensor Replacement

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 Replacement Estimates for Popular Mercedes-Benz Models