More than one in 10 young drivers have teamed up with a friend or family member to buy a car to save money and do their bit for the environment, according to a survey this week.

Co-buying has enabled some two million motorists -- six per cent of all drivers -- to get on the road when they otherwise would not have been able to, it found.

And more than one in five (23 per cent) 18-29 year olds are currently considering sharing their car and the estimated 2,000 pounds a year running costs.

Going green was also an increasing concern with four out of five (82 per cent) of all motorists in the Direct Line insurance survey saying vehicle emissions are a growing worry.

Out of the young drivers who already share a vehicle, close to a quarter (23 per cent) are sharing because it is better for the environment and 14 per cent do it to help reduce congestion.

Emma Holyer, Direct Line's Motor spokeswoman said: "Sharing a car is a great way to save money on costs and to help reduce vehicle emissions as well. It's particularly helpful for younger drivers who tend to pay higher insurance premiums."

YouGov questioned 2,083 adults online between Dec. 15 and 18 last year for the survey.