The insurance industry says the police need more resources to bring the $100 million problem of vehicle crime under control.
Only 20% of thefts reported in 2009 were resolved. The rate was even lower in Auckland City, Canterbury and Wellington: 14%, 15% and 18% respectively.
The Insurance Council says it's clear the police need far more resources to deal with crimes such as the theft of motor vehicles, because those responsible often go on to more serious offences.
Chief executive Chris Ryan says insurance premiums would be lowered if fewer vehicles were stolen, broken into or interfered with.