Private hire drivers are taking legal action against London Mayor Sadiq Khan over the congestion charge.
The group, which includes Uber drivers, says the charge is discriminatory as 94 per cent of them are from black, Asian, and other minority ethnic backgrounds.
London's "black cab" licensed taxis will remain exempt, according to a BBC report Friday.
The mayor's office says it is not prepared to ignore the damaging impact the rise in private hire vehicles is having on congestion and air pollution.
From 8 April, private hire vehicle drivers will have to pay the £11.50 daily congestion charge to drive in central London, under rules introduced by the mayor.
Uber driver Abdurzak Hadi says that as he drives in central London from Monday to Friday, he will be almost £60 a week worse off.
"I will be punished for coming to work. This is a tax on poor drivers," says Mr Hadi.
Most drivers, such as those working for Uber, will have to pay the charge themselves and cannot pass it on to passengers, because it is the company that sets the rates for fares.
London has roughly 114,000 private hire (PHV) drivers, who are overwhelmingly from black, Asian, and other minority ethnic backgrounds, and this is what has led to a legal challenge.
The percentage figure comes from a report to the mayor entitled "Changes to the Congestion Charge", which followed a consultation which Transport for London says received 10,000 responses.
The report says: "As the majority of PHV drivers (about 94 per cent) are from black, Asian and minority ethnic backgrounds (BAME) and many are from deprived areas, there is a disproportionate impact on these groups."
However, it assesses the impact as being "minor adverse".
The report also includes analysis showing that a majority of black cab drivers are white British.
The Independent Workers' Union of Great Britain (IWGB), which represents private hire drivers, is seeking a judicial review of the mayor's decision on the basis that it indirectly discriminates against BAME PHV drivers.