Oxygen Sensor Replacement Estimate for Mercedes-Benz 300SL

Mercedes-Benz 300SL Oxygen Sensor Replacement costs $229 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$228 to $238
Labor: $70 -$80
Parts: $158
Average Dealer price
$410
Average Shop price
$281
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CarServiceYourMechanic PriceShop/Dealer Price
1990 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$241.31Shop/Dealer Price$309.54 - $457.08
1993 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$238.14Shop/Dealer Price$305.70 - $450.95
1990 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$238.14Shop/Dealer Price$305.62 - $450.81
1992 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$238.14Shop/Dealer Price$305.66 - $450.88
1991 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$241.31Shop/Dealer Price$309.56 - $457.11
1993 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$241.31Shop/Dealer Price$309.53 - $457.06
1991 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$242.10Shop/Dealer Price$310.68 - $458.93
1992 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$238.14Shop/Dealer Price$305.70 - $450.94
Show example Mercedes-Benz 300SL Oxygen Sensor Replacement prices

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

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9 years of experience
Fantastic mechanic. The cost of changing the oil at a Mercedes dealership was $283.00. He saved me over $190.00. He showed up on time, with a great smile. He sure knows his business. Did a great job!!!!!
2007 MERCEDES-BENZ E350 - OIL CHANGE
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32 years of experience
Couldn't ask for anything more...
2008 MERCEDES-BENZ C300 - UBERX INSPECTION AND OIL CHANGE PACKAGE
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19 years of experience
Godwin did a great job changing the oil in my car. First, he called me and arrived early for the appointment which I really appreciated. Then he answered my questions about the car that were not even related to the oil change. He has a good attitude and you can tell he know what he is doing. I absolutely liked the way he did the job and will certainly use his services again.
2010 MERCEDES-BENZ E350 - OIL CHANGE
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18 years of experience
Kevin was so professional and so knowledgable. He really knows cars and has a passion for what he does. Thank you for the amazing service, I'll keep telling everyone I know about yourmechanic.com!
2007 MERCEDES-BENZ E63 AMG - CAR IS NOT STARTING 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.

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