Oxygen Sensor Replacement Estimate for Mercedes-Benz 300SEL

Mercedes-Benz 300SEL Oxygen Sensor Replacement costs $234 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$228 to $249
Labor: $70 -$80
Parts: $158 -$169
Average Dealer price
$410 to 431
Average Shop price
$281 to 294
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CarServiceYourMechanic PriceShop/Dealer Price
1989 Mercedes-Benz 300SELL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$252.60Shop/Dealer Price$323.66 - $479.67
1988 Mercedes-Benz 300SELL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$249.22Shop/Dealer Price$319.56 - $473.13
1988 Mercedes-Benz 300SELL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$249.22Shop/Dealer Price$319.48 - $472.99
1991 Mercedes-Benz 300SELL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$238.14Shop/Dealer Price$305.66 - $450.88
1991 Mercedes-Benz 300SELL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$241.31Shop/Dealer Price$309.56 - $457.11
1990 Mercedes-Benz 300SELL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$241.31Shop/Dealer Price$309.53 - $457.06
1990 Mercedes-Benz 300SELL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$242.10Shop/Dealer Price$310.68 - $458.93
1989 Mercedes-Benz 300SELL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$249.22Shop/Dealer Price$319.55 - $473.12
Show example Mercedes-Benz 300SEL Oxygen Sensor Replacement prices

Parts required for a Mercedes-Benz 300SEL Oxygen Sensor Replacement

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111 reviews
Jose
12 years of experience
Jose showed up right on time. He was very knowledgeable and completed the job very quickly. He also suggested some other things that I might need but was not pushy. Thank you so much!
1996 MERCEDES-BENZ C220 - OIL CHANGE
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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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20 reviews
Joseph
15 years of experience
Excellent mechanic. He completed the car service in timely manner. Rate:10
2001 MERCEDES-BENZ ML320 - POWER STEERING PUMP REPLACEMENT
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Mike
11 years of experience
Mike was on point and provided honest feedback on a pre purchase car inspection. Thank you Mike!
1993 MERCEDES-BENZ 600SL - PRE-PURCHASE CAR INSPECTION
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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