Owners of the highest-polluting cars will be charged £25 to enter London's congestion charge zone under new proposals from Transport for London.
The proposal, which is set to be outlined in a consultation document being issued this Friday, will link London's congestion charge to the carbon dioxide output of each car.
Models which emit 120g/km of CO2 or less will be exempt from the charge, whereas those which emit more than 225g/km will have to pay £25 a day to enter the zone.
A driver of a car emitting more than 225g/km of CO2 could pay up to £1696 a year in charges now, but this will rise to £5300 if the proposals are given the go-ahead.
Most other cars and commercial vehicles will pay £8 daily, which is the same as the current rate.
However, the proposals will force owners of some low-emission hybrids to start paying the charge, as only cars with the latest Euro IV-compliant engines will qualify for exemption.
In addition, the 90% discount for families living within the charging zone will be dropped if they drive a car emitting more than 225g/km of CO2. At present they pay around £170 a year, which would rise to £5300 under the plans.
Truck drivers who meet Euro V standards would qualify for a £2 a day discount, but bio-ethanol machinery will not receive any charge exemption because the scheme will operate purely on CO2 emission rates.
The proposals have met with a mixed response, with the Society of Motor Manufactures and Traders vowing to push for a rethink on what it describes as 'totally disproportionate proposals'.
Green car buyer's guide
Click here to find out how to buy and run a more environmentally friendly car.
Our reviews are based on hard data and thorough testing in the real world.
Up to the minute news from around the globe
Get a car insurance quote from over 100 companies with What Car? Compare in less than five minutes
What Car?
is brought to you by
Haymarket Consumer Media