Car tax changes have been revealed and will come into power early next year.
The updates could seen electric car owners paying an extra £250 to use their vehicle on the road despite contributing zero pollution.
Upfront tax changes were scrapped this year to encourage more motorists to switch to fully electric vehicle.
Benefits in kind charges for electric models purchased under salary sacrifice schemes was cut from 16% to zero to boost demand.
This means motorists will pay no further tax charges if their vehicle emits zero tailpipe carbon emissions between now and April 2021.
But these changes will rise to 1% in 2021 and 2% in 2022 before costs are frozen for a further two years.
The increase means those who purchase a car under their current terms will see prices rise from years two and three.
Pod Point investigated how charges could increase by over £250 for some owners on the highest incomes.
For example, a fully electric Nissan LEAF model with a value of £29,790 will have zero tax between 2020 and 2021.
But between 2021 and 2022, the vehicle will have a benefit in kind value of £29,790 times by 1%.
This will leave a total of £297.90 which is then divided by a person’s average income to determine an overall payment.
Those who pay 20% income tax will then pay just £59.58 per year or just under £5 per month.
And those on 45% income tax will see charges rise to £134.06 per year or over £11 per month.
Costs will rise even more from 2022 when tax rates increase to 2%, Pod Point says the overall benefit in kind value will be £595.80.
Motorists who pay 20% income tax will then fork £199.16 per year or just under £10 per month to run their vehicle.
But the new car tax changes might not apply to thousands of motorists in the UK.
A new study from electric car experts Go Ultra Low found that 32% of fleet managers were unaware of the changes.