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Estimates Exhaust and Emissions Oxygen Sensor Replacement

BMW 640i Gran Coupe Oxygen Sensor Replacement

As is always the case, the cost of the repair depends on the make, model, and year of your car.

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$90.58 $1010.5
Average Shop Price $428
RepairSmith Price $243
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This range covers an average oxygen sensor replacement. Tell us your car to get a guaranteed price from RepairSmith.

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BMW 640i Gran Coupe Oxygen Sensor Replacement

RepairSmith offers upfront and competitive pricing. The average cost for BMW 640i Gran Coupe Oxygen Sensor Replacement is $414. Drop it off at our shop and pick it up a few hours later, or save time and have our Delivery mechanics come to you.

Car
Location
Quoted on
Price
2017 BMW 640i Gran Coupe
3.0L L6 Turbo Base • 61,000 miles
San Diego CA 92134
Nov 23, 2020
$320 - $392
2015 BMW 640i Gran Coupe
3.0L L6 Turbo Base • 62,000 miles
Woodland CA 95695
Nov 18, 2020
$395 - $483
2018 BMW 640i Gran Coupe
3.0L L6 Turbo Base • 24,000 miles
Los Angeles CA 90048
Nov 18, 2020
$338 - $413
2014 BMW 640i Gran Coupe
3.0L L6 Turbo Base • 101,000 miles
Whittier CA 90605
Nov 17, 2020
$378 - $462
2016 BMW 640i Gran Coupe
3.0L L6 Turbo Base • 23,000 miles
Oakland CA 94611
Nov 16, 2020
$413 - $505
2014 BMW 640i Gran Coupe
3.0L L6 Turbo Base • 53,000 miles
Placentia CA 92871
Nov 13, 2020
$298 - $364
2019 BMW 640i Gran Coupe
3.0L L6 Turbo Base • 22,000 miles
Santee CA 92071
Nov 11, 2020
$383 - $468
2018 BMW 640i Gran Coupe
3.0L L6 Turbo Base • 47,000 miles
Fresno CA 93728
Nov 9, 2020
$397 - $485
2019 BMW 640i Gran Coupe
3.0L L6 Turbo Base • 12,000 miles
Santa Ana CA 92703
Nov 6, 2020
$416 - $508
2014 BMW 640i Gran Coupe
3.0L L6 Turbo Base • 63,000 miles
Costa Mesa CA 92627
Nov 5, 2020
$382 - $466
Last Updated:
Jan 21, 2021 4:52 PM
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What is an Oxygen Sensor?

Would you be shocked if I said it’s a sensor to measure oxygen? Okay, but it’s a bit more than that. Cars have both upstream and downstream sensors (also known as O2 sensors). Upstream oxygen sensors are placed in front of the catalytic converter, and measure the amount of oxygen in the exhaust. The car’s computer then uses that data to determine the proper air to fuel ratio.  Downstream oxygen sensors are located behind the catalytic converter, and measure the efficiency of the converter.

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Signs of a faulty Oxygen Sensor

Poor performance

No one likes poor performance. That includes you, and it certainly includes your car. Faulty O2 sensors will feed misinformation to your car’s computer. The computer will then alter the engine in a way that leads to less power, some hesitation and jerkiness, and running rough. Which means you’ll be embarrassed the next time you try to show off at a green light.

Check engine light

Oh, the check engine warning light. That light that you pretend isn’t there when it lights up. How has that worked out for you? Try as you might, ignoring a check engine light won’t make it go away. And oxygen sensor failure is a common cause of the light illuminating.

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How urgent is an Oxygen Sensor replacement?

You’re not really in any danger driving around with a busted O2 sensor. Your car will still be safe to drive. But the performance won’t be ideal, and you may fail an emissions test. You don’t need to drop everything and run straight to a repair, but get around to it when you can.

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