My 3.0d has a production date of 11/07 and thus far engine has performed faultlessly. I do my own servicing and stick to the vehicle's onboard service reminder for service intervals (I don't do early oil change as some would recommend). Touch wood, my X has been nothing short of a pleasure thus far. I've put 25K on the clock since taking ownership just over 2 years ago which isn't to say it's not used much. We live in a tiny coastal town and my wife drives it daily over short distances. I mention this because there is chatter on the net about carbon buildup etc in diesels when driven in similar environments. Not sure if this helps or confuses matters but that's my experience at least.