Oxygen Sensor Replacement Estimate for Mercedes-Benz R320

Mercedes-Benz R320 Oxygen Sensor Replacement costs $289 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$282 to $313
Labor: $70 -$80
Parts: $212 -$233
Average Dealer price
$517 to 558
Average Shop price
$348 to 374
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CarServiceYourMechanic PriceShop/Dealer Price
2007 Mercedes-Benz R320V6-3.0L Turbo DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$299.24Shop/Dealer Price$381.96 - $572.94
2007 Mercedes-Benz R320V6-3.0L Turbo DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$295.00Shop/Dealer Price$376.77 - $564.67
2008 Mercedes-Benz R320V6-3.0L Turbo DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$295.00Shop/Dealer Price$376.70 - $564.53
2009 Mercedes-Benz R320V6-3.0L Turbo DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$316.83Shop/Dealer Price$404.03 - $608.27
2009 Mercedes-Benz R320V6-3.0L Turbo DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$321.48Shop/Dealer Price$409.78 - $617.47
2008 Mercedes-Benz R320V6-3.0L Turbo DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$299.24Shop/Dealer Price$381.95 - $572.93
Show example Mercedes-Benz R320 Oxygen Sensor Replacement prices
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Parts required for a Mercedes-Benz R320 Oxygen Sensor Replacement

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586 reviews
Joshua
22 years of experience
Joshua has done a grant job as before. I'm grateful.
1998 MERCEDES-BENZ C230 - TRANSMISSION FLUID SERVICE
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432 reviews
Patrick
22 years of experience
Patrick was great ( he showed up early which was appreciated!), however the part was not. Trying to get a replacement from him. The fan motor he replaced is not OEM quality. I will update this review when the job is done right...
2002 MERCEDES-BENZ CLK430 - HEATER BLOWER MOTOR REPLACEMENT
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268 reviews
Richard
16 years of experience
Richard was excellent and professional. Thanks for great service!
2001 MERCEDES-BENZ ML430 - WATER PUMP (AUXILIARY) REPLACEMENT
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212 reviews
Enrique
16 years of experience
A+ quality work, professionalism and friendliness. Enrique performed an initial inspection on my vehicle due to the temperature gauge light coming on. He arrived early and upon completion of the inspection provided me with very detailed information regarding the issue reported. I scheduled an appointment to perform the recommended work and let me just say Enrique is a jewel. Again, he arrived early he was friendly and courteous and described everything to me in detail. As soon as he completed the job, he explained what he did, why he did not have to perform certain other recommended repairs and the information was provided in such a way, that even me as a woman who knows nothing about cars could understand. I will definitely use Enrique in the future :-)
2008 MERCEDES-BENZ C300 - COOLING/RADIATOR FAN MOTOR 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