An increasing number of drivers are "running on empty" due to high petrol and diesel costs.

According to breakdown service Green Flag, its figures show a 40% increase in the number of fuel-related call outs in the second half of January, compared with the same period last month.

A survey by the company showed that 48% of drivers had been dangerously close to empty or broke down before reaching the pumps at some point in their lifetime. More than a third of these incidents occurred in the last three months during a period when the price of petrol at the pumps has reached record levels.

The poll also showed that more than 30% of drivers had cut down on their motoring to offset rising fuel prices. But only 4% had taken up car-sharing and only 6% had bought a more fuel-efficient car.

Of the 2,110 adults surveyed, those from Northern Ireland had the most fuel-related breakdowns, while younger drivers (aged 18-34) were the ones most likely to run out of petrol.

Dan Robinson, head of Green Flag, said: "There is no hiding from the fact that the constant rises in fuel are affecting drivers nationwide, with almost half now driving on empty.

"For most, driving is a necessity rather than a choice and despite Government speculation about stability, high fuel prices are here to stay, placing pressure on the motorist's pocket.

"We encourage motorists to become more vigilant about filling up to ensure they are not left stranded. It's as simple as keeping an eye on your fuel gauge before setting off, no matter if it's a short trip or a long journey."