The 100 grams/km CO2 output figure is an important one for motorists in the UK. Cars that can hit this magic number are exempt from London’s daily $16 Congestion Charge, which is levied upon motorists attempting to enter London’s downtown core. But new rules may leave drivers liable for the daily fee, as lawmakers seek to change the exemption threshold to 75 grams/km.
AutoExpress reports that as many as 19,000 motorists could be screwed over by the change in regulations, though they’d be exempt from having to pay the fee until 2015. The new rules would leave just 9 cars – 6 of which are pure EVs – exempt from the charge. The remaining three use some sort of hybrid system to achieve such a low CO2 output.