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How do you know if your catalytic converter has been stolen from your car?


The catalytic converter is a crucial component of your car's exhaust system, designed to reduce harmful emissions. Unfortunately, due to the valuable metals inside, it has become a prime target for thieves. If you suspect your catalytic converter has been stolen, there are several telltale signs to look out for. In this article, we’ll guide you through the symptoms and what to do next.


Signs That Your Catalytic Converter Has Been Stolen


Here are the most common indicators that your catalytic converter may have been stolen:



  • Loud, roaring engine noise: Without the catalytic converter, your car’s exhaust system is incomplete, causing the engine to produce a much louder noise than usual. This is often the first sign drivers notice.

  • Reduced engine performance: A missing catalytic converter can disrupt the exhaust flow, leading to poor acceleration and reduced power.

  • Strong exhaust smell: The catalytic converter helps filter harmful gases. Without it, you may notice a strong, unpleasant smell of unfiltered exhaust fumes.

  • Visible damage or missing part: If you look under your car, you may see a gap in the exhaust system where the catalytic converter used to be. Thieves often cut it out, leaving jagged edges or saw marks.

  • Check engine light: In many modern vehicles, the absence of a catalytic converter will trigger the check engine light due to disrupted oxygen sensor readings.


Why Are Catalytic Converters Targeted by Thieves?


Catalytic converters contain precious metals like platinum, palladium, and rhodium, which are highly valuable and can be sold for a significant profit. Thieves can remove a catalytic converter in just a few minutes, making it a quick and lucrative crime.


What to Do If Your Catalytic Converter Has Been Stolen


If you suspect your catalytic converter has been stolen, follow these steps:



  • Contact the police: File a report with your local law enforcement. Provide as much detail as possible, including the time and location of the theft.

  • Notify your insurance company: Depending on your coverage, your insurance may help cover the cost of repairs or replacement.

  • Take your car to a trusted mechanic: A professional can confirm the theft, assess the damage, and replace the catalytic converter. At Kevin's Autos, we specialize in exhaust system repairs and can help get your car back on the road quickly.

  • Consider anti-theft measures: To prevent future thefts, you can install a catalytic converter lock or shield, park in well-lit areas, or invest in a car alarm system.


Protecting Your Vehicle


While catalytic converter theft is a growing problem, taking proactive steps can help reduce your risk. Regularly inspect your vehicle, park in secure locations, and consider anti-theft devices. If you ever need assistance, Kevin's Autos is here to help with expert advice and reliable repairs.


Stay safe and vigilant, and don’t hesitate to reach out to us for all your car maintenance and repair needs!


Frequently Asked Questions

What does your car sound like if the catalytic converter is stolen?


The first sign of a stolen catalytic converter is incredibly loud vehicle noises. You will find that when driving without your catalytic converter, it will sound like your vehicle is roaring—especially when starting or giving it gas.



How much does it cost to replace a catalytic converter?


between $200 and $2,500
Whether your catalytic converter needs replacing because it was stolen or because it is failing, a replacement can potentially cost you anywhere between $200 and $2,500 — and that's excluding labor costs.



Does insurance cover a stolen catalytic converter?


Is a stolen catalytic converter covered by insurance? If you have comprehensive coverage on your auto insurance policy, then you're typically covered against catalytic converter theft. Comprehensive coverage will typically pay to replace the stolen catalytic converter and repair any related damage from its removal.



How do I check my catalytic converter?


Using a vacuum gauge and testing for back pressure are common ways of checking whether or not the catalytic converter is clogged. There's no way of fixing a clogged or damaged catalytic converter. You'll need to replace it with a new one.



Can you drive without a catalytic converter?


You can technically drive without a catalytic converter, but doing so would be illegal. If your catalytic converter has been stolen, you'll probably notice because your engine will be much louder while idling. Driving without a catalytic converter won't compromise your safety, but you will be at risk of being fined.



What car is most likely to have its catalytic converter stolen?


Here's a rundown of the vehicles that, from 2021 to 2022, had the most consistent losses reported from catalytic converter theft.

  • Ford F-Series trucks.
  • Honda Accord.
  • Toyota Prius.
  • Honda CR-V.
  • Ford Explorer.
  • Ford Econoline.
  • Chevrolet Equinox.
  • Chevrolet Silverado.



Can I still drive my car without a catalytic converter?


To summarize, it's possible but illegal and potentially unsafe to drive a car with a missing or bad catalytic converter. If you must operate your vehicle before you can afford a replacement cat-con, try to keep your trips brief and drive only to nearby locations.



Will my car start if the catalytic converter is stolen?


Yes and there's a good chance it may still start at first. If there's complete blockage it won't start.



How does a car act when the catalytic converter is bad?


Driving with Bad Catalytic Converter
If you're noticing sluggish engine performance, reduced acceleration, a smell of rotten eggs or sulfur from the exhaust, dark exhaust smoke, or extreme heat coming from under the vehicle, these are symptoms of a clogged Catalytic Converter, and it should be repaired soon.



How do I check if my catalytic converter was stolen?


Symptoms of Converter Theft
Go to the back of the car and look underneath. The catalytic converter is a round canister that connects two pieces of piping in the exhaust. You will see a gaping space in the middle of your exhaust if the converter is missing, and you will likely see signs of the piping being cut away.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.