Oxygen Sensor Replacement Estimate for BMW 325i

BMW 325i Oxygen Sensor Replacement costs $246 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$178 to $428
Labor: $70 -$216
Parts: $108 -$212
Average Dealer price
$309 to 675
Average Shop price
$219 to 490
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CarServiceYourMechanic PriceShop/Dealer Price
1989 BMW 325iL6-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$186.94Shop/Dealer Price$241.59 - $348.35
2003 BMW 325iL6-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$363.15Shop/Dealer Price$475.62 - $657.94
2005 BMW 325iL6-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$411.52Shop/Dealer Price$535.87 - $754.31
1992 BMW 325iL6-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$184.78Shop/Dealer Price$238.96 - $344.16
1990 BMW 325iL6-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$186.94Shop/Dealer Price$241.61 - $348.39
1994 BMW 325iL6-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$186.94Shop/Dealer Price$241.58 - $348.34
1989 BMW 325iL6-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$187.48Shop/Dealer Price$242.42 - $349.70
2006 BMW 325iL6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$361.93Shop/Dealer Price$470.87 - $665.60
Show example BMW 325i Oxygen Sensor Replacement prices
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Parts required for a BMW 325i Oxygen Sensor Replacement

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586 reviews
Joshua
22 years of experience
Joshua is always the best person to work on my car and like his wisdom very true and people person. Joshua you are the best person and mechanic I ever encountered with thanks a lot for you service.
2006 BMW 325I - CAR IS MAKING A NOISE INSPECTION
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450 reviews
Ben
36 years of experience
Ben was great,very friendly, very knowledgeable, great attitude, I would definitely recommend him
1994 BMW 325I - SPARK PLUG REPLACEMENT
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344 reviews
Robert
26 years of experience
Robert has serviced my car several times already, and I don't have any complaints. He is consistently punctual and professional. He works quick, and he has always gone above and beyond what is expected.
2006 BMW 325I - BRAKE SYSTEM FLUSH
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248 reviews
Stefan
12 years of experience
Stefan was personable, friendly, and great! He arrived within the designated time and got the job done-- that's all that really matters. It's awesome that this service exists. I was able to cook and eat breakfast AND change my nail polish. :P
2002 BMW 325I - OIL CHANGE
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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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