Workshops are seeing more business due to growing theft of catalytic converters.
AA Insurance Services reports that that in January it had claims for just eight thefts but this had risen to 79 in October.
It said although catalytic converter thefts represent a very small proportion of all insurance claims made, the number of claims has steadily increased since January 2018.
Catalytic converters contain precious metals such as palladium, rhodium and platinum and can either be sent for scrap or sold privately via online auction sites.
As the converter is either unscrewed or sawn off the car, other damage can occur with bills up to £3,000.
Janet Connor, managing director for AA insurance services said the tenfold increase in claims for catalytic converters was “shocking”.