> **Quick Answer:** A stolen catalytic converter leaves your engine unable to run properly, and in many cases the car won't start at all or will run so roughly it's unsafe to drive. Call 911 to file a police report first, then call a tow truck. You need a flatbed. Do not try to drive it. Towing a short distance will run $75 to $150 in most cities, and your comprehensive auto insurance should cover both the tow and the converter replacement.
## Why Won't My Car Start If the Catalytic Converter Was Stolen?
Your car won't start because the exhaust system is now open, and many modern vehicles have oxygen sensors tied directly into the engine management system. When those sensors read impossible values or detect a sudden total loss of backpressure, the ECU (engine control unit) can go into a failsafe mode that prevents a normal start. On some vehicles, specifically many Toyota Prius models and late-model Honda trucks, the theft also damages wiring harnesses that thieves cut to reach the converter faster. A cut O2 sensor wire alone can prevent the engine from firing.
Even if the engine does crank over, running it without the catalytic converter means running it without proper exhaust backpressure. The engine will sound like a straight-pipe dragster, and exhaust gases can backflow into the engine bay. Don't run it.
## What Do I Do in the First 10 Minutes After Discovering the Theft?
Call 911 and get a police report started. This is not optional, it is the document your insurance company will require before they pay anything. Give dispatch your exact location. While you wait, take photos of the undercarriage where the converter was. You will see clean saw cuts on the exhaust pipes, sometimes within inches of each other. That cut marks the theft cleanly for the adjuster.
Then call your insurance company or roadside assistance. If you have comprehensive coverage, which is the coverage type that handles theft, both the tow and the converter replacement fall under that claim. The deductible still applies, but converter replacements routinely run $1,000 to $3,500 depending on the vehicle, so filing is almost always worth it. An Aftermarket catalytic converter on a standard vehicle might run $300 to $500 in parts, but OEM units on hybrid vehicles, especially the Prius, can exceed $3,000.
Do not call a random tow truck off an ad before you check whether your insurance roadside benefit covers the tow. A covered tow costs you nothing out of pocket. An uncovered tow on a flatbed for a few miles will cost $100 to $200. Check your policy first, it takes two minutes. For what to expect on tow costs without insurance, [see this breakdown of tow truck costs without insurance](/how-much-does-a-tow-truck-cost-without-insurance/).
## Does My Car Need a Flatbed or a Wheel-Lift Tow?
It needs a flatbed. A wheel-lift tow picks up one end of the vehicle and drags the other end on its wheels. With no catalytic converter and possibly damaged exhaust piping hanging low, a wheel-lift tow risks dragging metal across the road and further damaging sensors, the flex pipe, or the oxygen sensor bungs. A flatbed loads the entire car and carries it level, which is the right call here. Request a flatbed specifically when you call.
## How Much Is This Going to Cost Me, Total?
The tow itself, if you're paying out of pocket, runs $75 to $200 for a local drop at a shop. The real money is the converter repair. Here is the
*Photo: Pexels*
rough breakdown by vehicle type:
- Standard sedan or SUV (domestic/import): $300 to $900 for an aftermarket converter, $800 to $1,800 for OEM
- Toyota Prius (2004 to 2009 especially): $1,500 to $3,500 because the Prius catalytic converter contains more palladium and rhodium than most
- Full-size trucks (Ford F-250, Ram 2500): $600 to $1,500
- Labor to cut and weld new pipes and install the converter: $200 to $500 on top of parts
If you have comprehensive coverage, your insurer pays everything above your deductible. A $500 deductible on a $2,500 Prius repair means you're out $500. Without insurance, you're paying the full bill. If you're uninsured or underinsured and the tow cost is a concern, [read about what happens if you can't pay the tow truck driver](/what-happens-if-i-cant-pay-the-tow-truck-driver/).
## How Do I Keep This From Happening Again?
Get a catalytic converter anti-theft plate or shield welded under the vehicle. These are steel cages or plates that bolt or weld around the converter and force a thief to spend five to ten minutes with cutting tools instead of thirty seconds. Most shops can install one for $150 to $400 in labor and parts. Some insurance companies offer a small discount for installing one.
High-theft vehicles, the Prius, Honda Element, Toyota Tacoma, and Ford trucks with diesel particulate filters, are worth protecting proactively. Parking in well-lit, high-traffic areas and using a battery-powered alarm that triggers on vibration also reduces risk. A converter alarm like the CatStrap wraps around the converter and triggers 120dB if cut. Not perfect, but it adds seconds that thieves don't want to spend.
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*Photo: Pexels*
## Common Questions
**Q: Can I drive my car to the shop without a catalytic converter?**
A: In most cases, no. If the car won't start, the decision is made for you. If it does start, running it without the converter risks engine damage from backpressure loss and exposes you and others to raw exhaust gases. Tow it.
**Q: Will insurance cover a stolen catalytic converter?**
A: Yes, if you have comprehensive coverage. Theft is a comprehensive claim, not collision. You'll pay your deductible, and the insurer covers towing and the cost to replace the converter. File the claim the same day and have your police report number ready.
**Q: How long does it take to replace a stolen catalytic converter?**
A: A shop with the part in stock can do it in two to four hours. If they need to order an OEM unit, especially for a hybrid, expect one to five business days. Ask if an aftermarket unit is acceptable to your insurer, some policies require OEM.
**Q: Will my car throw a check engine light after the catalytic converter is replaced?**
A: The shop should clear all stored codes after installation. If the light comes back, it usually means the replacement converter is not functioning correctly or there is still a damaged oxygen sensor. Don't ignore it. [A flashing check engine light with shaking is a separate emergency](/check-engine-light-flashing-car-shaking-pull-over-now/).
**Q: Is a stolen catalytic converter covered under my car warranty?**
A: No. Theft is not a manufacturer defect, so factory warranties don't apply. This is strictly an insurance matter under your comprehensive coverage.
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Catalytic Converter Stolen: Car Won't Start and You Need a Tow: What Drivers Should Know
Catalytic converter stolen and car won't start? Here's exactly what to do, what it costs to tow, and how to handle insurance right now.
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