More than 65,000 new members have joined Liftshare this year, while the corporate client list now includes pharmaceutical giant GlaxoSmithKline.
Liftshare is the UK's largest car sharing scheme helping to match would-be travellers with a driver willing to take them to where they want to go.
It is the brainchild of engineering student Ali Clabburn and was set up in 1998.
Mr Clabburn said that 2011 has seen Liftshare maintain steady growth despite the difficult economic climate.
'We saw a record 6,000 new members join in just five days during Liftshare Week at the beginning of October.
'We were also delighted to add GlaxoSmithKline to our list of international corporate clients.'
Looking ahead to 2012, Mr Clabburn said the business aimed to maintain its growth pattern and launch new products on to the market, including a personal travel planning application called 'myPTP', which has already won a national innovation award.
'We will also be positioning Liftshare to take advantage of the many transport opportunities offered by the London 2012 Olypmics.
'And of course we will continue lobbying at local and national level for more efficient and sustainable use of the car.'