Oxygen Sensor Replacement Estimate for BMW 525xi

BMW 525xi Oxygen Sensor Replacement costs $455 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$429 to $533
Labor: $245 -$280
Parts: $184 -$253
Average Dealer price
$694 to 832
Average Shop price
$522 to 608
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CarServiceYourMechanic PriceShop/Dealer Price
2007 BMW 525xiL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$444.10Shop/Dealer Price$582.81 - $798.83
2006 BMW 525xiL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$440.41Shop/Dealer Price$578.63 - $792.20
2006 BMW 525xiL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$469.96Shop/Dealer Price$615.29 - $850.82
2007 BMW 525xiL6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$513.73Shop/Dealer Price$670.12 - $938.58
Show example BMW 525xi Oxygen Sensor Replacement prices
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Parts required for a BMW 525xi Oxygen Sensor Replacement

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Joshua did a great job. He fixed the problems with my brake sensors and did a thorough inspection of the car. He helped out with a pesky service light that would come on intermittently as well. He was exceptionally professional and knowledgeable. He had the right tools for the job as well. I would highly recommend Joshua to work on your car!
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Fixed the car to my satisfaction. Pointed out other areas of concern that I might want to address soon.
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16 years of experience
Alfredo showed up on time. Extremely knowledgeable concerning BMWWs. Had all the right equipment to troubleshoot the problems and came up with great solutions.
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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 BMW Models