Why the catalytic converter matters so much to your scrap price

Ask why one scrap quote is £60 higher than another and the answer, more often than not, is the catalytic converter. Here is why a component most people never think about is worth more than the doors, the wheels and the engine block put together on many cars.

What is inside it

A catalytic converter is a ceramic honeycomb coated with platinum, palladium and rhodium — three of the most expensive metals on earth. There is only a few grams in each unit, but rhodium in particular has traded at several times the price of gold in recent years. Recyclers recover the metals by crushing the honeycomb and refining the powder, and they pay scrap yards by the unit or by weight of the ceramic.

Which cars have the most valuable ones

Petrol cars generally carry more precious metal than diesels, and hybrids the most of all — a Toyota Prius or a Honda Jazz hybrid has a converter worth several times a typical diesel's. Older, larger petrol engines from Japanese and German makers tend to be well loaded. Diesel cars have a converter plus, on newer models, a particulate filter, which also has some value.

Why theft is a problem

Because the converter is bolted to the underside and can be cut off in a couple of minutes with a battery saw, it became a target for organised theft, peaking around 2020–2022. High-riding hybrids were hit hardest. If your car has had its converter stolen, you will know: it will sound like a tractor and the engine warning light will be on.

What it means for your scrap price

We ask specifically whether the converter is present, and the price reflects it. A car with its converter is worth more; one without is worth less, and if you say "yes" and the driver finds it missing the price changes on the day. Being straight about it on the quote form is the way to get the number you are expecting.

Should I sell it separately?

Almost never. Some people are tempted to remove the converter and sell it to a specialist buyer before scrapping the car. Two problems. First, you are unlikely to be offered more for it separately than it adds to the scrap price — the yard is selling to the same refiners, at trade rates. Second, it is illegal to be paid in cash for scrap metal, so the sale has to be traceable anyway. Leave it on the car and let the valuation account for it.

The rest of the car

After the converter, value is in weight — the steel — and then in a working battery, alloy wheels, and a complete, running drivetrain. But on a typical hatchback the converter alone can be a fifth of the price. It is the one part worth checking is still there before you get a quote.