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
1991 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$241.31Shop/Dealer Price$309.54 - $457.08
1992 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$238.14Shop/Dealer Price$305.70 - $450.95
1990 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$238.14Shop/Dealer Price$305.62 - $450.81
1990 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream 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
1993 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$242.10Shop/Dealer Price$310.68 - $458.93
1992 Mercedes-Benz 300SLL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream 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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Jeff
22 years of experience
Jeff changed my oil pretty quickly even though my Mercedes is a bit of a hassle to deal with. Additionally, he helped me figure out that the reason my car wasn't changing gears is most likely because it does not have enough transmission fluid. On top of that, he was very friendly and provided me with awesome customer service- and now I know exactly what I need to get services to get my car back in action!
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16 years of experience
After moving to a new city I needed a new mechanic. I was set up with Steven who came to a dealership to meet me and inspect a used Mercades I was interested in. He was very genuine about his review of the car along with being highly experienced. It seemed like he truly cared about me and my purchase unlike past experiences. Steven was just an overall nice guy who I knew I could trust off the bat and I will continue to use him from YourMechanic in the future. Thanks for making this completely hassle free and providing a great report of my new cars health.
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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