Image copyright Getty Images

More than half of vehicle thefts in Scotland are unsolved, new figures have revealed.

Police said the vehicles were often stolen to order by criminal gangs using technology to bypass entry systems on keyless cars.

In the past three years, figures from Police Scotland showed a detection rate of just 24% for all vehicle crime.

The data also revealed large variations in the number of car crimes solved depending on where they happened.

According to insurers a new claim is made every six minutes across the UK, with payouts at their highest level for seven years.

Insurers and security experts have expressed concerns about technological vulnerabilities in modern vehicles such as the keyless car entry systems.

Police Scotland said it was working closely with the industry to stay on top of technological advances and said cars were mainly stolen for onward sale, short-term use in other crimes or for breaking down and selling on parts.

Image copyright Getty Images Image caption In 2018, there was £376m worth of car theft in the UK, according to Thatcham Research

Figures from Police Scotland, released to the BBC under freedom of information laws, showed a variance of detected stolen vehicle crimes by local authority councillor wards.

The Edinburgh suburb of Morningside recorded 32 stolen vehicles in 2017-18 and a detection rate of just 15.6%, but the neighbouring Southside ward had 52 reports of stolen cars and a clear-up rate of 43.5% over the same period.

In Glasgow last year, the Garscadden/Scotstounhill ward recorded 28 stolen vehicles with a detection rate of 32%, while in Cardonald there were 20 stolen cars reported in a period which had a 75% clear-up rate.

Elsewhere, Dunfermline South in Fife had a 100% detection rate in 2017-18, but the neighbouring Dunfermline North council ward saw 66.7% of car thefts solved.

The Torry area of Aberdeen had a 37.5% detection rate last year, while the Millburn ward of Inverness was at 75%.

'New avenues'

Richard Billyeald, chief technical officer at Thatcham Research, a safety and security group funded by the car insurance industry, said: "We have moved on quite some way from the epidemic levels of car crime of the 1990s and that is largely because of the technological changes.

"However, this has opened up new avenues for this sort of crime.

"For criminal gangs it is an attractive proposition; stealing a £60,000 car from a driveway in the middle of the night is a lower risk as there is little confrontation and if they are organised, and they mostly are, then it can be stripped down for parts or moved on in a relatively short space of time."

Image copyright Getty Images Image caption In March, ratings agency Fitch warned that motor insurers were unable to keep pace with the rising cost of claims after a steep increase in thefts

Mr Billyeald said police had a difficult job trying to detect a crime where security was being undermined by technological vulnerabilities.

He added: "The layers of security added over the years in the industry count for nothing when they can be circumvented instantly by criminals using digital devices.

"We have had repeated concerns over keyless entry or start vulnerability, with too many examples of cars being stolen in seconds from driveways."

Car models

Mr Billyeald said the bypassing of entry systems on keyless cars - known as "relay attack" - was the most common issue.

However, on-board diagnostic computers in cars, as well as signal blocking from a standard fob to prevent a car from locking, was also a problem.

Six new car models were given a "poor" ranking in a theft-risk report on keyless entry vehicles by Thatcham Research in March.

Models rated poor were the Ford Mondeo, Hyundai Nexo, Kia ProCeed, Lexus UX and Toyota Corolla Hybrid.

However, the results were criticised by the car industry which questioned the methodology of the Thatcham study.

How keyless theft or 'relay attack' works

Media playback is unsupported on your device Media caption Thieves hack into a car's security system using computerised unlocking technology

Keyless car entry systems let drivers open and start their cars without taking their key out of their pocket.

Thieves, normally working in pairs, will target a car parked outside a house.

One criminal will hold a device close to the car that boosts the signal meant for the key, while the other thief will stand close to the house with another device that relays that signal to the key, fooling the system.

The figures from Police Scotland show that in 2017-18 a total of 4,589 vehicles were stolen, with 1,980 of this type of crime solved in that year.

The previous year there were 4,668 vehicles stolen and 2,002 crimes detected in that period.

Over the past three years, there were 45,854 vehicle-related crimes, which included attempted theft and stealing items from a vehicle.

A total of 11,194 of the crimes were solved over the same three-year period, according to Police Scotland figures.

Image copyright Getty Images Image caption Cars are increasingly sold with keyless entry and ignition systems

Det Supt Nicola Shepherd, of Police Scotland, said the force had detected 273 more vehicle crimes across Scotland in 2018-19 than the previous year.

She added: "We understand the effect vehicle crime has on victims and we are working to combat this increasingly complex crime.

"This type of crime often involves vehicles being targeted and stolen to be used in other criminal activity.

"We work closely with other police forces, car manufacturers, the insurance industry and private sector to improve our shared understanding of technical developments and trends.

"We know more can be done and we want to promote preventative measures to create a difficult environment for criminals and I'd ask people to be vigilant and wary of any suspicious activity in your street, including people scoping out the area. Keep your keys in a safe place and away from the front door."