Oxygen Sensor Replacement Estimate for Mazda MX-3

Mazda MX-3 Oxygen Sensor Replacement costs $179 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$127 to $242
Labor: $70 -$80
Parts: $57 -$162
Average Dealer price
$207 to 417
Average Shop price
$155 to 286
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CarServiceYourMechanic PriceShop/Dealer Price
1994 Mazda MX-3L4-1.6LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$155.59Shop/Dealer Price$191.51 - $266.60
1994 Mazda MX-3V6-1.8LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$208.76Shop/Dealer Price$258.04 - $373.05
1995 Mazda MX-3L4-1.6LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$154.01Shop/Dealer Price$189.56 - $263.47
1995 Mazda MX-3L4-1.6LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$241.53Shop/Dealer Price$298.98 - $438.55
1994 Mazda MX-3L4-1.6LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$164.83Shop/Dealer Price$203.06 - $285.08
1992 Mazda MX-3L4-1.6LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$132.24Shop/Dealer Price$162.32 - $219.89
1993 Mazda MX-3L4-1.6LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$131.99Shop/Dealer Price$162.09 - $219.54
1992 Mazda MX-3V6-1.8LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$208.76Shop/Dealer Price$258.03 - $373.04
Show example Mazda MX-3 Oxygen Sensor Replacement prices
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Parts required for a Mazda MX-3 Oxygen Sensor Replacement

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180 reviews
Peter
31 years of experience
The first appointment I booked was with Mario for 5 pm. He phoned me at 5:10 and told me he was running a little late, but would be there shortly. He arrived at 6:55 pm. Very unprofessional.
1999 MAZDA 626 - CAR IS NOT STARTING INSPECTION
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61 reviews
Cary
22 years of experience
Called a few hours before appointment to confirm, showed up on time. Very professional. My car is a pain in the *** to work on and it took him a little longer than expected, but no complaints from him or new charges. Highly recommended!
2001 MAZDA PROTEGE - SERPENTINE/DRIVE BELT REPLACEMENT
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44 reviews
Michael
20 years of experience
Michael was early for my appointment. He was very knowledgeable about the repairs he did on my vehicle and answered every question I had. It was a stress free reapair.
1997 MAZDA B2300 - STARTER REPLACEMENT
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37 reviews
Matthew
12 years of experience
Punctual, Informed and personable.
2005 MAZDA 3 - TRAILING ARM BUSHINGS REPLACEMENT (PASSENGER SIDE)
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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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