Oxygen Sensor Replacement Estimate for Mercedes-Benz 400E

Mercedes-Benz 400E Oxygen Sensor Replacement costs $254 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$249 to $268
Labor: $70 -$80
Parts: $179 -$188
Average Dealer price
$451 to 470
Average Shop price
$307 to 319
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CarServiceYourMechanic PriceShop/Dealer Price
1993 Mercedes-Benz 400EV8-4.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$273.54Shop/Dealer Price$349.84 - $521.55
1992 Mercedes-Benz 400EV8-4.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$259.83Shop/Dealer Price$332.82 - $494.35
1993 Mercedes-Benz 400EV8-4.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$269.78Shop/Dealer Price$345.17 - $514.09
1992 Mercedes-Benz 400EV8-4.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$259.83Shop/Dealer Price$332.78 - $494.27
Show example Mercedes-Benz 400E Oxygen Sensor Replacement prices

Parts required for a Mercedes-Benz 400E Oxygen Sensor Replacement

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Robert
26 years of experience
I love this service! It's awesome. No rental, no travel and it's done in my driveway?Great prices too....very fair and more than half the price of dealerships.
2001 MERCEDES-BENZ C240 - VALVE COVER GASKET REPLACEMENT
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32 years of experience
He was fast and competent
2008 MERCEDES-BENZ C300 - 20,000 MILES MAINTENANCE SERVICE
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23 years of experience
David was on time, extremely professional and polite. The service (brake pads changed) I had scheduled was more than I needed and David saw to it that I was only charged for the work he performed; I was quoted to have all the pads changed but only need the back set done. Definitely happy with the service he provided and will certainly use this service again for my future car needs. It was refreshing to deal with a mechanic that wasn't out to take my money for services I really didn't need; this was the first time i didn't feel taken advantage of when it came to servicing my car.
2011 MERCEDES-BENZ CLS550 - BRAKE PADS REPLACEMENT (REAR)
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Logan
44 years of experience
Logan was fantastic! Very personable and knowledgeable. Would definitely use him again! Thank you!
2009 MERCEDES-BENZ E350 - 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