Strangely underpriced car at dealer -prev. accident?

[merlin5]

Whilst looking for a car for my dad, I noticed in a Merc official garage a 60-plate C250 CDI with only 8k on the clock and Comand Nav for an unusually low price (£23k). The garage tends generally to overprice a lot of their vehicles and there are C220's of similar age going for £3-4k more. Not sure if I am missing a trick here? Can Merc sell an approved car that may have had an accident? Do the premium car check text things have details of minor accidents? Advice appreciated.

[davepoth]

The dealer should have an HPI check done already, might be worth asking.

[Beyond Rational]

Ex 'MB management' car?