Must admit the C4 ride is fantastic..very comfortable..Mine was the showroom car and had been pre reg, although never road used, and like you my mileage is borderline or below.The price however was such that I couldnt miss it tbh...Said Techie was helpful on this point too...advice is to drive it once a month on a motorway or similar at 3000rpm /about 50mph, in 3rd gear, for about 20mins..Ignore the horrible noise it makes apparantly..This allows the dpf to regen properly..Was also advised that doing mileage at high speed, still won`t do the regen, as many people think...so hopefully etc....