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Mercedes-Benz R350 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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Mercedes-Benz R350 Oxygen Sensor Replacement

RepairSmith offers upfront and competitive pricing. The average cost for Mercedes-Benz R350 Oxygen Sensor Replacement is $415. 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
2006 Mercedes-Benz R350
3.5L V6 4Matic • 171,000 miles
La Crescenta CA 91214
Nov 18, 2020
$385 - $471
2012 Mercedes-Benz R350
3.5L V6 4Matic • 138,000 miles
Tujunga CA 91042
Nov 18, 2020
$383 - $469
2011 Mercedes-Benz R350
3.5L V6 4Matic • 24,000 miles
Moraga CA 94575
Nov 18, 2020
$346 - $422
2009 Mercedes-Benz R350
3.5L V6 Base • 147,000 miles
Lynwood CA 90262
Nov 17, 2020
$397 - $485
2007 Mercedes-Benz R350
3.5L V6 4Matic • 40,000 miles
Inglewood CA 90301
Nov 14, 2020
$390 - $476
2011 Mercedes-Benz R350
3.0L V6 Turbo Diesel Bluetec 4Matic • 100,000 miles
Los Angeles CA 90039
Nov 12, 2020
$376 - $460
2009 Mercedes-Benz R350
3.5L V6 4Matic • 120,000 miles
Dublin CA 94568
Nov 9, 2020
$354 - $432
2011 Mercedes-Benz R350
3.5L V6 4Matic • 102,000 miles
Ontario CA 91762
Nov 9, 2020
$380 - $464
2007 Mercedes-Benz R350
3.5L V6 4Matic • 37,000 miles
Fresno CA 93727
Nov 1, 2020
$330 - $404
2012 Mercedes-Benz R350
3.5L V6 4Matic • 131,000 miles
Las Vegas NV 89114
Oct 31, 2020
$389 - $475
Last Updated:
Dec 17, 2020 6:25 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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