VED exemption for historic vehicles comes in to play when a car is 40 years old. Your car falls under the emissions-based system - basically, the more carbon dioxide it emits the more tax you pay. I think your model emits 246g/km of CO2 which puts it in the second to highest tax band costing you £565 a year. Do you use it all year round? Six months' VED is £310.
There's a full break down on the Government site: www.gov.uk/vehicle-tax-rate-tables/rates-for-cars-...1