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:DVLA number plates - Driver buys £92,000 registration for this amazing reasonVW ID Roomzz flagship electric SUV concept design REVEALED in new picturesTesla powered electric 1958 VW Beetle unveiled - and it could be yours for just $10Using Apple Pay to buy McDonalds drive thru could land you a £1,000 fineFuel price postcode lottery - The cheapest and most expensive places to refuel revealedRange Rover Evoque lands five star Euro NCAP safety rating and this new record