Car security · typically £60–£200

A catalytic converter is cut out in under two minutes. Replacing it costs four figures.

Cat theft targets the rhodium and palladium inside — hybrids worst of all. A bolted guard turns a two-minute cut into a job thieves abandon.

The problem

What actually happens

Catalytic converters contain small amounts of rhodium, palladium and platinum — metals worth more than gold by weight. Thieves jack a car up on the street or driveway, run a battery saw through two pipes, and are gone inside two minutes with a part worth hundreds in scrap. The owner inherits a £1,000+ replacement, weeks off the road, and often an insurance claim that costs the excess plus years of higher premiums.

Hybrids are targeted hardest — their cats run cooler and corrode less, so the metal content stays high. Toyota Prius, Auris and Honda Jazz owners see repeat attacks: some cars have lost two or three cats. Height helps too: SUVs and vans offer crawl space without jacking.

Sources: our analysis of official police.uk and DfT records — see the vehicle crime data and methodology.

The solution

What to buy — the checklist

✓Guard plate or cage bolted through existing chassis points — tamper-proof bolts, no drilling into the car
✓Model-specific guards beat universal clamps where available — check your exact model and year
✓Cable-cage designs (CatClamp style) wrap the pipes either side — fitting is harder for thieves to plan around
✓A tilt-sensing alarm is a strong pairing: the jacking itself triggers it before the saw starts
✓Marking kits (forensic etching) add a deterrent layer scrap dealers are obliged to check

Where to start looking

Cable cage: wraps the cat

Aircraft-cable cage around the converter — the hardest design to saw around.

~£150 · See options →

Guard plate for hybrids

Model-specific shields for the most-targeted cars.

~£120 · See options →

Tilt alarm pairing

Triggers on jacking — before the saw comes out.

~£30 · See options →

Searches, not endorsements of a single listing — compare whatever you find against the checklist above.

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The outcome

What changes once you own it

The two-minute crime becomes a twenty-minute one, on your driveway, under a screaming tilt alarm — and thieves doing cat runs are choosing between your guarded car and the unguarded identical model two streets over. For hybrid owners especially, one fitting ends the repeat-victim cycle: the £60–200 guard is a tenth of one replacement cat.

Questions

Asked before buying

Which cars are most at risk of cat theft?

Older hybrids top every force's list — Toyota Prius and Auris, Honda Jazz and CR-V — because their converters hold more recoverable metal. High-clearance SUVs and vans follow, since thieves can slide under without jacking.

Will a guard affect the exhaust or MOT?

Properly fitted guards bolt to the chassis and never touch the exhaust system itself, so heat, flow and MOT inspection are unaffected. Tell the tester it's there — they see them routinely now.

Is cat theft covered by insurance anyway?

Usually, as theft-of-parts — but you pay the excess, lose no-claims discount unless protected, and premiums rise at renewal. Repeat victims can struggle to stay insured at all. The guard exists to keep you out of that cycle entirely.

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