The charge would apply to cars which were first sold before 2005 and the measure is expected to take effect in the beginning of 2017. The charge would be imposed on top of the existing $15 congestion charge, according to the mayor's proposal.
"Vehicles that do not meet the standard would pay a daily charge of around £10 to enter Central London, in addition to the Congestion Charge (currently £11.50) and any Low Emission Zone charges that are applicable," the mayor's plans, published on the London administration website, reads.
The proposals are now open for discussions.
According to the official statistics, nearly 10,000 Londoners die annually due to air pollution and the cost of health impacts caused by air pollution on London’s economy is estimated to reach $5 billion.