
Keep seeing these around and have warmed to the idea of owning one; been kinda looking at various models and prices and keep falling towards a C220 Sport dizzler Auto

Something around 2008/9 seem to be about £8K and with over 120K miles mostly and this is probably my budget.
Bothers me a bit that they're still fetching strong money at 8 years old, history tells me that I normally buy a car that plummets in value 2 weeks after I buy it but I think these things still look modern enough and are decent enough to warrant the price?
Early days but would appreciate any knowledge about these? I'm hoping the rust issues are now fixed, haven't found out yet if the 2.1 4-cyl engine has a DPF or not.
If not, please tell me I'm an idiot and need to go away and look at something else?