Fewer than half of passengers know whether their minicab is licensed, according to research by the London Assembly.
It found while 85 per cent of users say its important to feel safe in a taxi, far fewer actually knew how to identify a legal vehicle.
However two thirds of black cab passengers knew how to identify whether their taxi was licensed.
Black cab fares have gone up today by 0.7%. The increase will add an extra nine pence to the average taxi fare. Transport for London approved the rise in February.
London's new cab is a remodelled version of a vehicle first unveiled in August 2012. Modifications were made following feedback from the office of Boris Johnson.
The taxi was developed by Nissan's European design centre in Paddington and comes with round headlamps and a re-modelled grille as well as new front-bumper panels.
A new version of London's famous black cab has been launched by Nissan. The company says its new petrol-engined taxi will be cleaner than the current diesel cabs being used in the capital.
London Taxis may be an iconic symbol of the capital, but they are now about to hit the streets a little further away from home - in Perth, Australia.
The cabs will be sporting a new look as well, painted white instead of the traditional black to combat the Australian heat.
The London Taxi Company has exported a test sample of 98 taxis to the Western Australian city where they will under go trials over the next few weeks.
London's taxi drivers are never usually short of stories about who's been in the back of their cabs. But here's one that's hard to beat.
At first, Tracey Mitchell's £15 fare from a hospital in Paddington seemed like any other - until the parents of the Duchess of Cambridge got in after seeing their new grandson for the first time.
Carolyn Sim went to meet the cabbie who played a small part in history.
Geely says they will seek to re-establish the manufacture, sale and servicing of vehicles on the same basis as existed before Manganese Bronze went into administration.
The company says they will seek to develop new models to follow the current TX4 version.
A leading Chinese automobile manufacturer has bought Coventry-based Manganese Bronze, the makers of London's iconic black taxi.
Zejiang Geely Holding Group (Geely) purchased the group for £11.04m, in agreement with Pricewaterhouse Coopers, who were appointed their administrators.
Geely says it would continue to assemble the TX4 model at Manganese Broze's plant in Coventry