To report catalytic converter theft, file a police report first, get the report number, then contact your auto insurer to open a comprehensive coverage claim. Replacement runs from roughly $900 to over $4,400 depending on the vehicle, and most policies expect you to notify the insurer within a few days of discovering the loss, so both calls should happen quickly.
Confirm What You’re Looking At
Most people find out the moment they turn the key. With the converter gone, the engine produces a loud, aggressive roar that gets worse as you accelerate. You may also catch a sulfur smell from the raw exhaust, and the exhaust pipe may hang lower than normal or show a clean cut. If that’s what you’re hearing, shut the engine off.
Don’t Drive It, and Document the Scene
Leave the vehicle where it is. Modern engines rely on the converter as part of a calibrated emissions system, and running without one feeds bad data to the engine control module. That can damage oxygen sensors, hurt fuel efficiency, and raise exhaust temperatures enough to harm other components. A short drive to a shop can easily add hundreds of dollars to the bill.
While the scene is fresh, take photos of the underside where the converter was cut away, any tool marks or debris on the ground, and wide shots of where the vehicle is parked. Write down the exact date, time, and location you discovered the theft, and the last time you know the vehicle was intact. If there are nearby security cameras, note who owns them before you leave. Then arrange a tow to a trusted shop.
Pull Your Information Together
Both the police and your insurer will ask for the same core facts. Having them in one place keeps the calls short:
- Vehicle make, model, year, VIN, and license plate
- When you last saw the vehicle intact and when you discovered the theft
- The exact address or lot where it was parked
- Photos, any surveillance footage you’ve identified, and witness contact information
- Your insurance policy number and carrier name
File the Police Report
Call your local police department’s non-emergency line, or use their online reporting portal if they have one. Many departments now accept property crime reports online, which is often faster than waiting for an officer to come out. Walk through the vehicle details, the timeline, the location, and your evidence. Before you hang up or close the form, ask for a copy of the report, or at minimum the report number. Your insurer will not process the claim without it.
The report also feeds broader crime data. More than 64,000 catalytic converter thefts were reported through insurance claims in 2022, and law enforcement uses individual reports to track patterns and build cases against theft rings. Recovery of your specific converter is unlikely, but the paper trail matters if a case is eventually built.
File the Insurance Claim
Comprehensive coverage is what pays for a stolen catalytic converter. Liability and collision will not. Comprehensive covers losses outside a crash, including theft, vandalism, and weather damage, and your declarations page will show whether you carry it.1Progressive. Catalytic Converter Theft: Does Insurance Cover It?
Call your insurer as soon as you have the police report number. Policies typically require notification “promptly” or within a few days of the loss, and waiting weeks can give the company grounds to delay or deny the claim. Give them the report number, vehicle details, your photos, and any repair estimates you’ve already gathered. The insurer will assign an adjuster to review the damage and the repair cost. Once the claim is approved, you’ll be reimbursed for the parts and labor minus your deductible. On a $2,000 repair with a $500 deductible, that’s $1,500 back.
Run the math before you file. If the repair cost is close to your deductible, the payout will be small and the claim may still affect your future premiums. In that case, paying out of pocket can be the better call.
Rental Car Coverage
If your policy includes rental reimbursement (sometimes labeled transportation expenses), it can cover a rental while your car is in the shop for a covered loss. It’s an optional add-on, not part of standard comprehensive, so check the policy. Replacement itself usually takes one to three hours of shop time, but parts shortages for some vehicles can stretch the wait to days or weeks.
What the Repair Will Likely Cost
Costs vary sharply by vehicle. Based on 2026 estimates, total parts-and-labor replacement ranges from around $900 for a Ford F-150 to over $4,400 for a Honda Civic, where the part alone can exceed $4,000. A BMW 740i runs around $2,300. The converter itself is only part of the bill. Expect additional line items:
- Diagnostic fees: $50 to $150
- Hardware and gaskets: $20 to $100
- Oxygen sensor replacement if damaged: $150 to $300 per sensor
- Shop and environmental fees: $15 to $50
- Sales tax: 5% to 10% of the total, depending on your location
Get estimates from at least two shops and share them with your adjuster. Some insurers have preferred repair networks that can move the claim along faster.
What About a Tax Deduction
You generally cannot deduct the unreimbursed cost on your federal return. Since the Tax Cuts and Jobs Act took effect for tax years after 2017, personal casualty and theft losses are deductible only if they’re attributable to a federally declared disaster or a state-declared disaster, and a parking lot theft doesn’t qualify.2Office of the Law Revision Counsel. 26 U.S. Code 165 – Losses
There is one narrow exception. If you have personal casualty gains in the same tax year, such as an insurance payout that exceeded your loss on a separate claim, you can offset those gains with theft losses that aren’t tied to a disaster. For a single converter theft, that exception usually won’t apply. If the vehicle is used for business, the rules differ and the loss may be deductible as a business expense; a tax professional can tell you where you stand.3Internal Revenue Service. Form 4684, Casualties and Thefts