Oxygen Sensor Replacement Estimate for Mazda CX-7

Mazda CX-7 Oxygen Sensor Replacement costs $213 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$146 to $272
Labor: $70 -$80
Parts: $76 -$192
Average Dealer price
$244 to 477
Average Shop price
$178 to 323
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CarServiceYourMechanic PriceShop/Dealer Price
2007 Mazda CX-7L4-2.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$267.15Shop/Dealer Price$330.96 - $489.72
2008 Mazda CX-7L4-2.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$263.51Shop/Dealer Price$326.47 - $482.54
2012 Mazda CX-7L4-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$229.13Shop/Dealer Price$283.45 - $413.71
2010 Mazda CX-7L4-2.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$273.69Shop/Dealer Price$339.18 - $502.87
2011 Mazda CX-7L4-2.3L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$151.70Shop/Dealer Price$186.66 - $258.83
2012 Mazda CX-7L4-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$267.15Shop/Dealer Price$330.96 - $489.71
2009 Mazda CX-7L4-2.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$268.06Shop/Dealer Price$332.19 - $491.69
2010 Mazda CX-7L4-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$229.13Shop/Dealer Price$283.50 - $413.78
Show example Mazda CX-7 Oxygen Sensor Replacement prices
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Parts required for a Mazda CX-7 Oxygen Sensor Replacement

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445 reviews
Chris
17 years of experience
Outstanding service. Resolved my problem quickly and cheaply.
2007 MAZDA CX-7 - LIGHTS (HEADLAMPS/BEAMS/BRAKES) INSPECTION
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286 reviews
Dave
18 years of experience
He is so friendly and on time. More important he is honest and does his best to inspect and find out the problem. One thing I really liked about is that he takes time to explain me the questions I asked him about other issues on my car. I prefer to get Dave's help for my future appointments and will recommend him to friends cause he ia so careful!
1997 MAZDA 626 - CAR IS NOT STARTING INSPECTION
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111 reviews
Christopher
22 years of experience
Christopher, and Your Mechanic, have been more than fair trying to resolve a no-start condition on the vehicle. Although he was unable rectify the overall problem which has had to be referred to Mazda (and who are being singularly unhelpful), I have no hesitation recommending Chris who was most helpful and persevered trying to resolve the fault. I will personally be using his services again in the future.
2007 MAZDA CX-7 - CAMSHAFT POSITION SENSOR REPLACEMENT
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63 reviews
Melvin
6 years of experience
He was very helpful even though he didn't have the piece to diagnose my car he was still able to see what was wrong with my car
1993 MAZDA 626 - CHECK ENGINE LIGHT IS ON 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 Mazda Models