Oxygen Sensor Replacement Estimate for BMW 325i

BMW 325i Oxygen Sensor Replacement costs $248 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$178 to $432
Labor: $70 -$216
Parts: $108 -$216
Average Dealer price
$308 to 684
Average Shop price
$218 to 495
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CarServiceYourMechanic PriceShop/Dealer Price
1990 BMW 325iL6-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$186.26Shop/Dealer Price$240.74 - $346.99
1991 BMW 325iL6-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$184.11Shop/Dealer Price$238.17 - $342.90
2004 BMW 325iL6-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$371.30Shop/Dealer Price$485.60 - $673.86
1987 BMW 325iL6-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$184.11Shop/Dealer Price$238.13 - $342.83
1988 BMW 325iL6-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$186.26Shop/Dealer Price$240.76 - $347.02
2002 BMW 325iL6-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$337.14Shop/Dealer Price$442.76 - $605.30
1987 BMW 325iL6-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$186.80Shop/Dealer Price$241.56 - $348.33
1994 BMW 325iL6-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$184.11Shop/Dealer Price$238.16 - $342.89
Show example BMW 325i Oxygen Sensor Replacement prices

Parts required for a BMW 325i Oxygen Sensor Replacement

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586 reviews
Joshua
22 years of experience
I would only like to have Joshua work on my BMW in the future for repair needs.
2006 BMW 325I - BRAKE WARNING LIGHT IS ON INSPECTION
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395 reviews
Tien
18 years of experience
Knowledgeable and helpful. He explains alot about the process and the repair and additional tips about maintaining the car.
2006 BMW 325I - VALVE COVER GASKET REPLACEMENT
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344 reviews
Robert
26 years of experience
Robert was very professional and worked quickly. He went above and beyond by acquiring a mechanical part on my car for almost half the price of what the dealership charged for the same part. He is very skilled at what he does, and I would highly recommend him.
2006 BMW 325I - WHEEL BEARINGS REPLACEMENT (DRIVER SIDE REAR, PASSENGER SIDE REAR)
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286 reviews
Dave
18 years of experience
I am a repeat customer who is incredibly satisfied with Dave's competence and services. In the last job, he was able to immediately and correctly attribute the grinding noise while accelerating to differential's malfunction. Next, while differential replacement service was not even on YourMechanic menu he worked with the company to get it added and approved. Then he helped me save a lot on this expensive part by finding a matching aftermarket item on eBay. Very happy with the outcome!
2001 BMW 325I - DIFFERENTIAL ASSEMBLY
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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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