Catalytic converter theft: how to protect your car

Catalytic converter theft from cars isn’t a new crime, but it has increased significantly in recent times.

Police forces around the UK, including those in West Yorkshire, London and Suffolk, are advising owners of any car fitted with a catalytic converter to take precautions.

Any car fitted with a catalytic converter could be at risk. In Toyota’s case it is second and third-generation Prius models (2004-2009 and 2009-2016 respectively) and second-generation Auris Hybrids (2012-2018) which have been particular targets for thieves.

Below we’ve gathered the best advice for Toyota owners who may be concerned.

What is a catalytic converter? 

The catalytic converter is part of the car’s emissions control system. It cleans up the exhaust gases before they are expelled from the car through the exhaust pipe. Its internal elements react with the gases, breaking them down into less harmful substances and water vapour. All cars sold in Europe since 1993 have had to be fitted with catalytic converter by law.

Why are they a target for thieves?

Clearly the police are best placed to offer advice on the motives behind this crime, but we understand that in the main, the value of the catalytic converter for recycling is the main attraction to thieves, because they contain precious metals such as rhodium, platinum and palladium.

What is Toyota doing to stop its cars being targeted?

In May 2021, Toyota (GB) announced that it would be covertly marking more than 100,000 catalytic converters in order to combat theft. By working with police and Smartwater, catalytic converters can be tagged with an invisible yet traceable marking, meaning that a stolen catalytic converter can be traced to a specific crime, helping police in their attempts to fight the organised gangs responsible. It also raises the risk to all those handling the devices along the criminal chain, from theft to eventual disposal and recycling.

It is free to get the catalytic converter marked, all customers need to do is call their local Toyota or Lexus retailer to arrange a visit.

In addition to this, Toyota has issued 20,000 Smartwater kits to police to support their local anti-catalyst theft initiatives. The company is also working with the AA, Toyota’s roadside partner, so its patrols can point customers to where they can get a free kit.

We have also developed and reduced the price of a ‘Catloc’ device which can deter theft and make it more difficult. Toyota teams in the UK and other countries are urgently exploring new technical possibilities to deter criminals as well.

We are working with the police, as well as talking to government about changes in the law around scrap metal sales that would make it harder for criminals to sell stolen catalysts for cash.

However, these are criminal operations and our scope is therefore limited. A number of police forces are taking action and some forces, such as Nottinghamshire, are also starting awareness campaigns. It is vitally important for anyone who is a victim of this crime to report it to their local police force as quickly as possible.

In the main, it remains older cars that are targeted because advances in efficiency and technology mean the latest generations of Toyota catalytic converters contain vastly lower amounts of precious metals, whilst still doing their job just as well or even better; this means their value for recycling is very low and they are not attractive to thieves.

Does a Catloc give my car 100% protection from thieves?

Sadly not. It can make theft more difficult but thieves are using high-powered cutting tools to remove catalytic converters and because of this it is not possible to make catalytic converters ‘unstealable’. A Catloc makes it harder to steal a catalytic converter, slowing thieves down and acting as a deterrent. As mentioned above, we’re doing all we can to seek further technical options for customers.

Is Catloc available for my Toyota?

Catloc devices are available for a growing proportion of our range, but not all. We recommend speaking to your local Toyota centre.

How much does it cost to replace a catalytic converter?

Toyota’s first priority is to do all we can to support our customers who have been victims of crime.

We have moved to reduce the prices of replacement catalytic converters and Catlocs to a level where Toyota GB does not make any profit from supplying them to customers.

Your nearest Toyota centre can advise on exact costs after inspecting your vehicle.

Is it true that there is a long wait for replacement catalytic converter parts for Toyota cars?

The rapid rise in this crime in 2019 is one we could not have envisaged, set against many years of low incidence of catalytic converter theft. This initially impacted our ability to source enough of the parts we needed in some cases, for which we sincerely apologise.

Toyota has restarted production lines in Japan and France that made catalysts for many of the older models targeted in order to supply affected owners, developed a Catloc security device which helps deter theft (and has been granted a “Sold Secure with Gold Status” security ranking) and ensured it makes no profit at all from the sale of replacement catalysts or from Catlocs, providing them at cost.

If I’m worried about my Toyota model, what should I do?

If you are worried about potential catalytic converter theft from your Toyota, we recommend you use our locator tool to find your nearest Toyota centre and contact them to discuss the best way to protect your car.

This article was last updated on 13 May 2021, so some of the responses to reader comments below have been superseded by more recent information.


    1. Hi Melanie, thanks for getting in touch.

      According to our records, this vehicle is identified as ‘low risk’.

      Should you wish to protect your vehicle, a CATLOC, ISR Marking Kit, and Bolt should be available.

      Please contact your local Toyota centre to discuss.


  1. Hello, and thank you for so so kindly checking our vehicles on here through the comments. I don’t know if you are still looking at them, but I would appreciate knowing what if anything I need to do to protect our vehicle, which we just bought! It is LB18NVP, a 2018 Yaris hybrid. Thank you so much and appreciate your support.

    1. Hi Bea, thanks for getting in touch.

      According to our records, this vehicle is identified as ‘low risk’.

      Should you wish to protect your vehicle, a CATLOC, ISR Marking Kit, and Bolt should be available.

      Please contact your local Toyota centre to discuss.


    1. Hi Keith, thanks for your comment.

      Please can you provide your vehicle registration so that we can look into this for you.


  2. Hi my vehicle is 2020 yaris (GU70UXM) I’d like to protect this car against this crime any advice direction would be appreciated

    1. Hi Cevat, thanks for getting in touch.

      This vehicle has been labelled as ‘low risk’ according to our risk matrix.

      Should you wish to protect your vehicle, the following measures should be available: a CATLOC, ISR Marking Kit, and Bolt.

      Please contact your local Toyota Centre to discuss further here:


  3. My toyota yaris sport very rare car my catalytic converter is stolen by mechanic he replaced with very old one about 4 months ago I just found out because of noise, what can I do now please help,

    1. Hi Adam, thanks for getting in contact.

      We are very sorry to hear you have been a victim of this awful crime.

      Your Toyota centre is best placed to support you with this and provide information on future protective measures.

      You can locate your nearest centre here:

      We would also suggest contacting the police to report this, if you have not done so already.

      Please let us know if we can provide any more information for you.


  4. We have a 2015 Audis Sport. In recent weeks a local authority speed ramp has twice bent our Catloc causing the exhaust to rattle against the Catloc requiring a visit to our local Toyota garage. It appears the Catloc reduces our ground clearance to a level which cannot accommodate highway approved 5mph speed ramps even though we crawled over the spee ramp.

    1. Hi Peter, thanks for your comment.

      We are sorry to hear you are experiencing this.

      Your Toyota Centre are best placed to provide support with this. We would recommend re-contacting them for advice.


  5. Hi I have just bought a auris 2018 reg yo18tge I would like to know if it’s at risk and what I can do to safeguard it

    1. Hi, thanks for getting in touch.

      According to our risk matrix, this vehicle is categorised a ‘high risk’.

      The following protective measures should be available for this vehicle:

      -ISR Marking Kit
      -Tilt Sensor

      Please contact your local Toyota Centre to discuss your options further here:


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