I've had my x-type 2.1 V6 petrol for over a year, and love it. Everything about it is good. The problem is it has had an intermittent problem, causing misfires at 3000rpm You could avoid it by kicking down, at 6000rpm with the sport button pressed it was as happy as Larry. I have been to local garages, to hear them complain about how hard the engine is to work on. The main dealer basically said leave your cheque book at the desk. I have read the codes and they are all about misfires. I've worked my way through the problems, plugs, coils. The dealer said it was a faulty Lambda sensor, so we changed it. It may have been faulty but it wasn't the fault. The problems have become unbearable since Tuesday when the car passed it's NCT, the Irish MOT. It passed without fault, but leaving the centre the engine malfunction light was on and the car is virtually un-drivable. The idle is very unstable and it won't rev passed 3000rpm, it just sounds like it is gulping for air. Infact the air box sounds like it is trying to burp the alphabet. I think when they were bouncing it on the suspension tester they must have shaken something loose. Today's codes are: N/A P0305 cylinder 5 misfire P1313 misfire rate catalyst damage fault bank 1 P1316 injector circuit / IDM codes detected P0037 HO2S Bank 1 sensor 2 heater circuit low P0355 Ignition coil E primary / secondary circuit malfunction P1000P on board diagnostic system readiness test not complete (stays on) I'm hoping to find someone who like Jags to give me some advice. My problem is there isn't much sympathy round here from the Japanese car owners, I've the only Jag in the village. Thanks, Declan.