I own a 2004/54 Peugeot 407 SW HDI 136. It has done 43,900 miles. It recently over-revved and left a thick cloud of smoke from the exhaust. It then went into limp-home mode. I took it to my local Peugeot garage and they have found that there is excessive oil in the sump. It would appear that there was a fault with the anti pollution system and the engine management system. Having checked on various forums on the Internet both in the UK and in France it seems that this is not an uncommon problem with 407s especially those built before 2005. The Garage has suggested either replacing the engine or rebuilding it. Peugeot Customer Care has shown no interest in the problem. I would have thought that a diesel engine should last considerably longer than 44,000 miles. Is there any way I can get Peugeot to admit that there is a problem with these cars and hopefully persuade them to stump up for a new engine? Having been a loyal Peugeot supporter for many years I feel the affair is over. Any suggestions?