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:Car theft CRISIS: Number of keyless entry cars stolen RISE - Is your car at risk?The one thing you should NEVER do at a roundabout REVEALED - Are you making this error?DVLA number plate value calculators could reveal how much your plate is secretly worthDriver WARNING - Why smoking in your car could cost you over £2,000This dash cam error could land you with a £1,000 fine and three penalty points Giving your friends a lift could invalidate your car insurance and land you a HUGE fine