Oxygen Sensor Replacement Estimate for Mercedes-Benz ML450

Mercedes-Benz ML450 Oxygen Sensor Replacement costs $294 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$273 to $325
Labor: $70 -$80
Parts: $203 -$245
Average Dealer price
$500 to 583
Average Shop price
$337 to 389
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CarServiceYourMechanic PriceShop/Dealer Price
2011 Mercedes-Benz ML450V6-3.5L HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$289.79Shop/Dealer Price$370.15 - $554.05
2011 Mercedes-Benz ML450V6-3.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$329.71Shop/Dealer Price$420.17 - $634.10
2010 Mercedes-Benz ML450V6-3.5L HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$285.72Shop/Dealer Price$365.11 - $545.99
2010 Mercedes-Benz ML450V6-3.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$329.71Shop/Dealer Price$420.13 - $634.03
Show example Mercedes-Benz ML450 Oxygen Sensor Replacement prices
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Parts required for a Mercedes-Benz ML450 Oxygen Sensor Replacement

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450 reviews
Ben
36 years of experience
Very professional, punctual and sincere. Ben knows his stuff, no second guessing with his recommendations. "Straight shooter" to be precise!
2006 MERCEDES-BENZ E350 - INSPECTION / DIAGNOSTICS
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Trung
7 years of experience
Trung was amazing. He got the job done quick, and also diagnosed a few potential problems and showed them to me.
2006 MERCEDES-BENZ C230 - OIL CHANGE
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30 reviews
Terrell
36 years of experience
Terrell was timely and proficient. Arrived early with parts and everything necessary to complete the job. Job was completed fast, and easy!
2011 MERCEDES-BENZ E350 - BATTERY REPLACEMENT
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21 reviews
Eric
10 years of experience
Kept me informed for his arrival. Was very friendly.
1999 MERCEDES-BENZ S420 - OIL CHANGE
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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