Hello Shaun Did you get anywhere with the vibration problem. I have the same issue. After driving the car for about a mile and only travelling at about 40mph vibrations are felt/heard from the nearside rear, and the revs go up and down over a 250 rev band. After a couple of minutes the vibrations stop, the revs remain constant and I never get another problem no matter how many times I stop and start the car through out the day. The problem re-occours the next time I use the car, which may be up to a week later. In my opinion it is not the gearbox or the diff, as the problem would be more consistent and the car suffered from the jag lurch which was remedied when I had the gearbox reprogrammed at a local jag specialist. The car drives impeccably except for this fault. Is there anyone who has experienced this low speed vibration problem and who can offer some advice on how to resolve the issue. Shaun, in the absence of any replies I will go to my local jag specialist to seek advice and will post their comments in due course. Malcolm