Oxygen Sensor Replacement Estimate for Mazda CX-9

Mazda CX-9 Oxygen Sensor Replacement costs $153 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$133 to $191
Labor: $77 -$104
Parts: $56 -$87
Average Dealer price
$215 to 295
Average Shop price
$162 to 217
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CarServiceYourMechanic PriceShop/Dealer Price
2010 Mazda CX-9V6-3.7LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$137.97Shop/Dealer Price$169.18 - $226.89
2012 Mazda CX-9V6-3.7LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$169.31Shop/Dealer Price$208.43 - $289.70
2011 Mazda CX-9V6-3.7LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$169.31Shop/Dealer Price$208.38 - $289.61
2013 Mazda CX-9V6-3.7LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$169.31Shop/Dealer Price$208.41 - $289.65
2007 Mazda CX-9V6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$151.97Shop/Dealer Price$186.10 - $246.00
2010 Mazda CX-9V6-3.7LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$137.97Shop/Dealer Price$169.18 - $226.88
2009 Mazda CX-9V6-3.7LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$152.25Shop/Dealer Price$186.55 - $246.73
2012 Mazda CX-9V6-3.7LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$169.31Shop/Dealer Price$208.43 - $289.69
Show example Mazda CX-9 Oxygen Sensor Replacement prices

Parts required for a Mazda CX-9 Oxygen Sensor Replacement

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432 reviews
Patrick
22 years of experience
Prompt, texted to say he could make it earlier if that was convenient for me, and he was in and out in about 35-40 minutes.
2012 MAZDA CX-9 - OIL CHANGE
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274 reviews
Noe
31 years of experience
Noe was very professional and arrived in a timely manner. He checked that my repair was required before actually doing the work, and when it turned out it wasn't, he showed me exactly why it wasn't required. To be specific, he showed me the depth of my current brake pads vs the depth of the new brake pads, which saved me a lot of money. He was upfront and honest, and I really appreciated his demeanor.
2004 MAZDA 3 - CAR INSPECTION
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184 reviews
Tom
37 years of experience
Convenient, practical advice and good service. A throw back to your neighborhood mechanic before the massive dealer networks. A definite solution to those service items you might consider doing yourself but do not have the time.
2008 MAZDA CX-9 - BRAKE ROTOR/DISC REPLACEMENT (FRONT, REAR)
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73 reviews
Danny
6 years of experience
Late but announced, efficient and knowledgeable. Thanks Danny.
1991 MAZDA MIATA - CAR BATTERY REPLACEMENT
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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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