In mid-August (09) I bought an 18 month old Wicked red C6 2.7Hdi Lignage in perfect condition with 12,000 miles on the clock for around £15k. A brilliant saving on the £32k + original cost and not unexpected by all the critics when the car was launched. It's turned out to be just as expected in terms of comfort, (relative) economy at 32.5mpg over the last 300 or 400 urban miles which compares very favourably with a Volvo C30 2.0 SE I had before.
It really is a marvellous way to travel, and although critics suggested the Hydractive suspension didn't cope with low-speed urban roads, I guess it's all relative because, to me, the ride is sublime. Motorway work is silent, swift and very impressive although that urge to "press on" seems to have left me as it's all so relaxing and laid-back.
The only time the engine sounds like a diesel is if the doors are open when it first starts from cold. Close the door, and all is peace and quiet with it pulling strongly straight from the off.
I managed to find a red C6 which to my mind is so much more attractive than the generally sombre black or the more common silver examples. Unfortunately, I had to make-do with a black interior as the cream one only comes in the Exclusive trim which was £1,500 to £2,000 more.
Brilliant car for the used buyer.