Losing a Converter, and What Happens Next

You start the car and it sounds like a race car with a sore throat. It is a distinctive noise and an unmistakable one, and in the calls we take it usually arrives as a Monday morning surprise.

Why it happens

A catalytic converter contains small quantities of precious metals, and there is a resale market for the units. Removal is quick with a cordless saw, the part sits underneath the car in the open, and the vehicle is left driveable enough that the thief has already gone before anyone hears anything.

Which vehicles tend to be targeted

Ground clearance is the practical constraint. A vehicle that a person can get under without lifting it is a faster job than one sitting low. In the losses our own customers report to us, trucks, SUVs, vans and hybrids come up most often. We are describing what we hear on our own phones rather than publishing a statistic, and your own neighborhood's pattern may look nothing like ours.

What coverage responds

This is a theft of part of the vehicle, so it normally falls under comprehensive rather than collision, subject to your comprehensive deductible. A liability-only policy does not respond at all. Where the cut also damages oxygen sensors, wiring or exhaust piping — and it frequently does — that damage is normally part of the same claim.

The arithmetic worth doing before you file: get the repair quoted, compare it to your deductible, and remember that on a newer vehicle a factory converter assembly is rarely a small part. Where the repair is close to the deductible, filing may not be the right move; where it is well above, it usually is.

What actually deters it

• Park in a garage where possible, and otherwise where the underside of the car is not accessible from the curb.
• Park close behind another vehicle or against a curb so the car cannot be approached from underneath easily.
• Shields and cages that bolt over the converter add time and noise, which is the point.
• Etching the license plate number into the converter makes the unit harder to sell and gives law enforcement something to work with.

If it has already happened

Report it to law enforcement and get a report number — insurers ask for it, and it matters if the part surfaces. Photograph the underside before repair. Do not drive further than you must; the engine management system is running without its downstream sensor readings.

If your policy is liability-only and this is a risk where you park, tell us and we will show you what adding comprehensive looks like.