Car tax 2018 - Diesel cars which will cost up to £500 more to tax from April REVEALED CAR tax for a number of diesel car models and drivers in the UK will increase from April 1st. Here is a list of cars that will cost more in car tax from April 1st. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Radical new emissions test launching today set to shake-up the car industrySkoda offer HUGE discounts on cars under new trade-in scrappage schemeDrivers do THIS potentially dangerous activity for up to 40 minutes on journeysYour car keys could soon get pay for your shopping with contactless paymentToyota offers up to £4,000 off its vehicle range in new UK car scrappage schemeRenault £7,000 scrappage scheme Renault REVEALED - here’s how to cash in on the discounts