Ford Sierra tipped to sell for £105,000 - more than FIVE times what it was worth new A 31-YEAR-old Ford Sierra is tipped to sell for a staggering £105,000 - more than five times what it was worth new. The RS500 Cosworth was one of just 500 models made in 1987 and cost around £20,000 new. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Defrosting your windscreen can land you £60 fine, but doing THIS could see you avoid itNew BMW name trademarks indicates nine electric SUVs are on the waySeat Leon Cristobal - New tech could stop you from being arrested and fined, here’s whyDiesel car emissions checker - Online tool checks if YOU will need to pay new diesel taxesPetrol prices 'set to ROCKET' – but diesel drivers could be even worse offLampposts to be transformed into electric car chargers as more people make the switch