Car tax 2018 - These cars will cost £500 more to tax from April DIESEL car tax will be increasing from April 1st 2018 seeing certain cars costing up to £500 more in Vehicle Excise Duty for the first year. Here are some of the cars to be hit the hardest. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Your old tax disc could be worth a fortune: You could make over £500 selling them onlineHuge new driving law will come into force on UK motorways in ONE WEEKNew Citroen C5 Aircross SUV 2018 REVEALED ahead of world debut later this yearNew Mercedes-Benz C-Class Coupé and Cabriolet 2018 UK price and specs REVEALEDSupermarket petrol station price SHOCK - Fuel prices rise every day since MarchFord Fiesta ST 2018 review - Price, specs, road test and performance