5 Ways to Foil Catalytic Converter Theft

A stolen catalytic converter replacement can cost as much as $3,000 for the often-targeted Toyota Prius.

Philip ReedApril 7, 2021
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Catalytic converter theft has soared nationwide during the pandemic as drivers drive less and leave their cars unattended. Thieves can steal this antipollution device in a matter of minutes and sell it to scrap metal dealers for several hundred dollars for the precious metals it contains.

A replacement for a stolen catalytic converter can cost as much as $3,000 for the often-targeted Toyota Prius, says Colby Sandman, owner of Muffler Tech in Sacramento, California, who saw an uptick in thefts as the lockdowns took hold. Now, his shop replaces 15 to 20 stolen catalytic converters each day.

Such a theft is a “crime of opportunity,” Sandman says, so removing that easy opening will cause these cat burglars to move on to easier prey.

Here are the top tips from mechanics and law enforcement agencies to avoid a wrenching experience and a costly repair.

1. Know if you're a target

Call a good local muffler store and ask what cars have been targeted in your area, Sandman recommends. I called a shop and, sure enough, they reeled off many vehicles affected nearby, such as Ford trucks, Honda Elements and Jeep Cherokees, that had often been seen in the shop for a catalytic converter replacement.

“The Prius is the No. 1 vehicle for cat thefts” in the Sacramento area, Sandman says. As an ultra low-emissions vehicle, the Prius has a catalytic converter that contains more of the rhodium, palladium and platinum that render pollutants harmless.

Trucks and SUVs are often hit by thieves because it’s easy to slide under the vehicle rather than jack it up. Sometimes thieves unbolt the catalytic converter, but more often they just cut the connecting pipes using a battery-operated saw.

2. Install an anti-theft device

Investing in a cable locking device is much cheaper than replacing a catalytic converter, says Arantxa Chavarria, public information officer for the Long Beach, California, police department. The internet is filled with such devices to protect the catalytic converter, which is part of the exhaust system that runs along the bottom of your car. The anti-theft devices Sandman’s shop installs range from $250 to $800.

Here are a few of the popular devices:

  • A steel shield that fits over the catalytic converter, requiring time and extra tools to remove.

  • Cages made of rebar or other high-strength steel that's difficult to cut.

  • Stainless steel cables welded from the catalytic converter to the car’s frame.

Some muffler shops will custom-weld such a device to your car. But Sandman cautions that attaching the catalytic converter directly to the car’s frame can be noisy since the exhaust system otherwise is suspended from the car by sound-buffering hangers.

3. Paint your cat

Some sources recommend using a high-temperature fluorescent orange paint, such as those sprayed on barbecue grills, on your catalytic converter and then inscribing your vehicle identification number in the painted surface. This makes it traceable, and in theory at least, a reputable scrap metal dealer might decline to buy it.

4. Set an alarm or camera

You can turn up the sensitivity of your car alarm so that it goes off when thieves jostle your car. That’s fine, but as Sandman points out, then the alarm blares when your cat jumps on the car in the middle of the night. Other alarms are designed to be activated when the car is tilted, such as when it's jacked up. Installing a motion-sensitive dash cam can notify you of a theft in progress or possibly record the license plate of the getaway car.

In addition to alarms, Chavarria recommends getting motion-sensitive lights and parking in your driveway or a closed garage whenever possible. She also suggests getting to know your neighbors so you can recognize strangers who might be casing parked vehicles. I checked my local Nextdoor.com and found almost a dozen accounts of catalytic converter thefts in the past three months.

5. Check your car insurance

Comprehensive insurance covers stolen auto parts.

If you have full coverage — liability insurance, plus collision and comprehensive policies that repair or replace your own car — you're covered, minus your deductible amount. It's typically required if you have a loan or lease. If you have a vehicle at high risk for a catalytic converter theft, you might consider lowering your deductible amount.

If you carry liability coverage only, you're not covered for theft.

What to do if your catalytic converter is stolen

If you come out in the morning and start your car, you’ll know by the loud exhaust noise that your catalytic converter was stolen. Here are a few steps that can get you going again:

  • Aftermarket catalytic converters are cheaper, but make sure they're allowed in your state. A good muffler shop should know what's legal. In some cases, an aftermarket catalytic converter will be less desirable and prevent future thefts.

  • Ask your mechanic if driving your car without the catalytic converter will further damage it. If not, drive only to the repair shop.

  • Contact your insurance company and take pictures of the damaged exhaust pipe where the catalytic converter used to be.

  • File a police report, which can easily be done online in many jurisdictions. This will help police track such crimes and might assist in arrests.

  • While your new catalytic converter is being installed, ask the repair shop about adding an anti-theft device to prevent future thefts.