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Emissions-based vehicle tax charges by CO2 band, with a diesel supplement where the vehicle does not meet the cleanest standards and an additional surcharge for expensive cars in their first years. Rates change with each budget, so treat this as an indicative structure.
Road tax
annual = CO2 band rate x fuel adjustment + premium vehicle surcharge if applicable
Because emissions-based taxation alone raised little from low-emission luxury vehicles. The list price surcharge applies for several years from first registration.
They have been in many jurisdictions, but several are phasing exemptions out as EV numbers grow and fuel duty revenue falls.