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Car oxygen sensors are also called lambda sensors.

Expert Local Mechanics


Total expert car oxygen sensor replacement mechanics operating in London

Number of Ratings


Total number of car oxygen sensor replacement reviews in London

Average Rating

Average user rating for car oxygen sensor replacement bookings in London

Recent Car Oxygen Sensor Replacement Mechanic Reviews in London

9 Reviews

Jays Car Services

Garage in London, 16 years of experience

At Jays Car Service we have 16 years experience in Motor Mechanics. I take pride in my customer satisfaction. I have always been apart of a team but have taken the leap and have opened up my own space. Some ...

147 Reviews

Eddie Mobile Mechanic

Garage in London, 25 years of experience

A mobile mechanic with over 25 years in the trade. Fully qualified mechanic starting my career in independent garages and developing my experience. For your convinience, we come to you! Working on all makes...

616 Reviews


Garage in London, 30 years of experience

Hi, I’ve been a mechanic since leaving school and have owned and operated my own garage since I was 25 , were you could that I’ve done most jobs on a wide range of vehicles. I’d like to say that my workmans...

221 Reviews

Stoyanoski Igor

Garage in London, 10 years of experience

Pit Start is the only garage in the UK that carries out all repairs and servicing in full public view. You are allowed to go into the work area and inspect the work while it’s being carried out by our profes...

768 Reviews

Queensway Autos Repairs Ltd

Garage in London, 30 years of experience

We provide MOT tests, servicing and car repairs on all makes and models in Enfield and surrounding areas. Catering for customers in Enfield, Cheshunt, Barnet and Southgate, we offer quality car servicing and...

101 Reviews

Sarim Autos Ltd

Garage in London, 12 years of experience

We offer everything you need from a modern state-of-the art workshop – with transparent charges and excellent customer service at the heart of everything we do. Our team of dedicated service professionals ar...

35 Reviews

Atech Autos

Garage in London, 17 years of experience

Currently have 17 years experience, starting out my apprenticeship at Bridge Automotive Academy for 3 years. I then moved into a local independent garage where I learnt the trade and gained experience. After...

31st July 2021

MICHAEL, Stanmore

Volkswagen Polo • MOT with collection & delivery

110 Reviews

Cms Engineering Ltd

Garage in London, 15 years of experience

I started off my mechanical career at a Peugeot main dealers developing my skills for 6 years. Then moving on to a local independent garage for 1 year. My next venture was working for Lexus dealership for 4...

169 Reviews

Essex Mobile Autocare

Garage serving London, 16 years of experience

I done my apprenticeship at bates BMW main dealer. Since then I have worked at Independent garages. I have since decided to go out on my own as a Mobile Mechanic. I am able to offer a wide range of repairs i...

Want to learn more about Car Oxygen Sensor replacements in London?

Read our short guide with information on costs, symptoms and more.

What does an Oxygen Sensor do?

The sensor measures the amount of oxygen, or O2 present in the fuel / air mixture and engine emissions. Most cars have several oxygen sensors spread over the engine and its ancillaries; from the inlet manifold to the exhaust. Some cars even have a seperate sensor for each cylinder.

Usually the sensor puts out a voltage between 0.1 and 1 volt depending on the current passing through. This information from the sensors is processed by the engine's computer (ECU). The ECU in turn optimises the amount of fuel and air entering the engine to ensure optimal combustion and reduced emissions.

What does a oxygen sensor replacement involve?

  • The mechanic will read the ECU for possible fault codes related to the oxygen sensors.
  • The mechanic will inspect the sensor and ancillaries (like the electrical connectors).
  • If necessary, the mechanic will replace the sensor.
  • The mechanic will advise if other components need to be replaced as well.
  • The mechanic will check the sensors again.
  • The mechanic will test drive the car, if necessary the mechanic will make adjustments.

Can I replace the oxygen sensor myself?

Unless you are a qualified mechanic with the required skills, training and equipment to do the job, we strongly recommend a car oxygen sensor replacement is only carried out by a professional mechanic. ClickMechanic can help get you a vetted and local mechanic to carry out the work. Just enter your postcode and your car's registration number at the top of this page and select the work needed to get an instant fixed price up front.

What are the symptoms of a faulty Oxygen Sensor?

  • When the 'Check Engine' light on your dashboard is on.
  • When the engine won't start or cuts out during operation.
  • When the engine misfires.
  • When the engine runs rough (a rough idle for example).
  • When the engine doesn't perform as well as usual.
  • When the car's fuel consumption is higher than usual.
  • When the car fails an emissions test.

How long does it take to replace an o2 sensor?

A car oxygen sensor replacement usually takes around 1 hour, but can take less or more time. Ultimately, the time that the job will take will depend on a number of factors, like your vehicle's make and model, year, as well as other factors. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.

How often should you replace an oxygen sensor?

For an optimal combustion of the air / fuel mixture within the engine it is important to service the oxygen sensors as and when stipulated in the guidelines set out by your car's manufacturer. Professional and timely maintenance is essential to prevent further damage of other parts of the engine. Should you experience problems with an oxygen sensor, then it is advisable to have it inspected and, if necessary, have the sensor replaced.

What happens if I don't replace my oxygen sensor (or lambda sensor)?

Over time, an oxygen sensor can soil due to the dirty air passing along it. This decreases the sensor's ability to identify the amount of oxygen that is present in the area of the engine system it is situated. This can lead to the ECU not being able to regulate the fuel / air mixture correctly which can have as a consequence that the engine will run lean or rich. In turn the car can have poor fuel consumption, equally it might cause the car to fail an emissions test.

In many cases an oxygen sensor can be cleaned of dirt to restore its functionality. In other cases it can be that the oxygen sensor has really failed, in which case it needs to be replaced to prevent further issues and inconvenience.

Can I drive with a faulty oxygen sensor?

If you suspect there is any issue with your oxygen sensor (also known as an O2 sensor) or there are concerns about its age or condition, book an inspection with a professional mechanic immediate effect. Driving with a faulty oxygen sensor can lead to further complications on your vehicle.

Can you replace just one oxygen sensor?

A car usually has two oxygen sensors if it has a single exhaust pipe and catalytic converter, and sensors could be independently replaced. It is advisable to check with a professional mechanic whether it is possible to just replace one sensor as this can depend on a number of factors.

Is the oxygen sensor checked during an MOT?

The oxygen sensor or lambda sensor if often flagged during the emissions check in an MOT test. As the sensor helps regulate the fuel/air mixture going into the engine, it follows that a faulty lambda sensor is often the cause of emissions that are too high. It's recommended to check for a functioning oxygen sensor, especially prior to an MOT test.

 What causes the oxygen sensor to break?

Due to constant exposure to heat being fitted on the exhaust of the car, the oxygen sensor will eventually suffer from wear and tear over time. Contamination from debris and dust can also cause the oxygen sensor to become faulty. Typically, the oxygen or lambda sensor fails due to damage from being in close proximity to extremely high temperatures.

What is the average lifespan of an oxygen sensor?

Oxygen sensors can typically last anywhere from 40,000 to 100,000 miles however they may need to be replaced sooner if damaged or corroded.

Is a faulty oxygen sensor an MOT failure?

A faulty oxygen sensor in itself should not cause MOT failure as it is not checked as part of MOT. However, a failing sensor can lead to engine performance issues, if these result in emissions issues it is possible your vehicle can fail its MOT.

Can London garages offer home collection and delivery for car oxygen sensor replacement?

Yes, many garages in London are able to offer collection and delivery for a car oxygen sensor replacement. With ClickMechanic collection & delivery is free if your vehicle is drivable. Once booked a mechanic will pick up the vehicle on the day and time of your choice, do the work, and return the vehicle at a time convenient to you. Simply enter your vehicle registration number and postcode to get an upfront price for a car oxygen sensor replacement in London.

Can London mobile mechanics do car oxygen sensor replacement at my home or office?

Yes, London mobile mechanics can do a car oxygen sensor replacement at your home or office, provided there is a safe and sufficient space to conduct the repair or replacement. With ClickMechanic, once booked for a date and time of your choice, your booking will be offered to vetted mobile mechanics in your area.

How much does a Car Oxygen Sensor replacement cost in London?

The average cost of a Car Oxygen Sensor replacement in London is on average between £145 and £180. Ultimately the cost for a Car Oxygen Sensor replacement in London depends on the make and model of your car. Check out the ClickMechanic price below, and find out what you'd pay at a franchise dealer in London. We use industry standard data & millions of data points so you know what you should be paying.

These estimates may include Lambda sensor, Lambda sensor, Lambda sensor and/or Lambda sensor. We have quotes for the top 46 manufacturers.

Name ClickMechanic Click Mechanic average Franchise dealer estimate

Alfa Romeo

£175 £172 - £332 Get exact price


£177 £193 - £324 Get exact price


£159 £251 - £251 Get exact price


£251 £220 - £476 Get exact price


£127 £126 - £258 Get exact price


£131 £127 - £264 Get exact price


£146 £162 - £271 Get exact price


£165 £220 - £289 Get exact price


£145 £193 - £252 Get exact price


£188 £194 - £345 Get exact price


£127 £212 - £212 Get exact price


£132 £218 - £218 Get exact price


£133 £142 - £256 Get exact price


£141 £155 - £271 Get exact price


£178 £170 - £343 Get exact price


£160 £161 - £303 Get exact price


£152 £242 - £242 Get exact price


£187 £244 - £244 Get exact price


£148 £169 - £214 Get exact price


£190 £255 - £339 Get exact price


£188 £164 - £379 Get exact price


£144 £157 - £268 Get exact price

Land Rover

£180 £152 - £356 Get exact price


£186 £195 - £351 Get exact price


£108 £160 - £160 Get exact price


£272 £208 - £537 Get exact price


£194 £221 - £348 Get exact price


£146 £182 - £261 Get exact price


£145 £147 - £280 Get exact price


£200 £181 - £381 Get exact price


£143 £143 - £278 Get exact price


£155 £161 - £291 Get exact price


£180 £228 - £301 Get exact price


£145 £233 - £233 Get exact price


£145 £160 - £276 Get exact price


£141 £161 - £261 Get exact price


£155 £187 - £272 Get exact price


£177 £183 - £329 Get exact price


£178 £180 - £330 Get exact price


£141 £164 - £276 Get exact price


£205 £189 - £383 Get exact price


£166 £212 - £286 Get exact price


£169 £216 - £290 Get exact price


£147 £156 - £280 Get exact price


£175 £186 - £326 Get exact price


£187 £171 - £351 Get exact price

Prices could not be created for 34 models. Show ∨

  • Microcar
  • Metrocab
  • Hummer
  • Reva
  • Asia
  • TVR
  • Ferrari
  • Morgan
  • Buick
  • Lamborghini
  • Pontiac
  • Carbodies
  • DS
  • Mitsubishi Fuso
  • Moskvich
  • Cadillac
  • LDV
  • Ford US
  • Aixam
  • Austin
  • FSO
  • Maybach
  • Rolls-Royce
  • Santana
  • Tata
  • Great Wall
  • Piaggio
  • Perodua
  • Aston Martin
  • Lada
  • Lancia
  • Lotus
  • Ssangyong
  • London Taxi's International

Estimates on repair costs, such as the above results for a car oxygen sensor replacement, are created by combining data from multiple third-party sources. The actual cost of using your local repair providers may be outside of the estimated range. We provide estimates on repair costs for information only and accept no liability for any inaccuracies or errors. If you think an estimate is incorrect, please contact us to let us know.

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Mechanics in and around London

Recent Car Oxygen Sensor replacement quotes in London

These recent quotes were taken from our quote engine which uses third-party industry standard data on repair times, along with a live parts retailer, and a regional labour rate to build an accurate free quote. We are constantly improving our quote engine, so please let us know if a price seems incorrect.


Lambda sensor replacement

Jaguar X-TYPE
East Finchley

Lambda sensor replacement

Vauxhall Astra

Lambda sensor replacement


Lambda sensor replacement

Peugeot 208