Hi there sadly in this time of economic down turn larger car are more difficult to shift doesnt really matter what make they - you got cost of petrol to think of,road tax etc,a work colleague of mine just bought a Ford Focus 1.6 Diesel and pays £35 a year road tax and my IS costs me £245. In last sundays NOW Newspaper are a list of Depreciation duffers and winners eg a Chrysler 300C had a residual value of £10,778 after 3 years(£44910 new) 24% residual value while a E63 AMG had a residual value of £35,973 after 3 years(£73,415 new)51% residual value,Alfa Brera 3.2 V6 JTS - £9,535 29% residual value(£32,878 new),Audi TT Coupe fsi £14,650 60% residual value(£27,130 new)to mention a few.Sadly as soon as you leave the show room with your car it loses value while dealers equally want to pay as little as they can and make as much as they can.