From 1 April 2020 due to new legislation, all car manufacturers will change CO2 values from NEDC^ correlated to WLTP*.
WLTP aims to be more representative of real world driving conditions. As a result, most cars will change Vehicle Excise Duty (VED) road tax bands.
What is Vehicle Excise Duty (VED)?
VED is an annual tax for registering vehicles in the UK. The first-year of road tax is included in a car’s On-The-Road (OTR) price and is based on its carbon dioxide emissions (CO2).