Mine also has a very noticeable drivetrain vibration around 2k rpms in any gear and sometimes at idle, especially when the AC is on. I've been shifting into 7th for highway driving and it immediately eliminates the vibration at the cost of fuel economy. I've checked my heat shields as well and found no issues.
Have you checked your Transfer box for leaks?
Mine too I seem to remember appeared after the transfer box changed. I don’t know why they changed it but made it worse.
Yes. No sign of any oil leaks. But I did have a new transfer box under the service recall which seem to made it worse. It drives rough at around 64mph (1800 rpm) especially up hill. The vibration makes the heat shield vibrate. I cannot accept this is normal. I do wonder if it’s the transfer box or drive shaft angle. It vibrates even at idle enough to make the glove box area rattle like an old bus. I also find it difficult to engage low range and high range (after putting in neutral). Need to give it very good push but sometimes it fails and make a horrid grinding noise.
Mine vibrates and dealer said they all do. My front yoke seal leaking already from the vibration. If oil can get out, guess water and dirt can get in? Is that how it work? LOL I don't think Ineos or dealer cares. So much for Built for Purpose. At least the speed alert clicking keeps working.
I have wondered why the drive shaft is not completely straight and maybe possibly not balanced. Could this be the cause of the engine vibration at certain rpm?
Welcome to the club. I thought I Ineos would have sorted this by now.
Ineos know it’s an issue and it’s Pretty basic stuff to secure a Bowden cable. How many people has this happened to including myself twice , the first time getting stick in low range with centre diff locked. I find this quite annoying that people are still having this issue this far along the production stage. 
Have you had any solution to you issue here?
I've managed to reduce it so it's barely noticeable now but you can't 100% eliminate it. I thought it only affected diesel. The solution is to bend all the heat shield around the fuel tank skid plate and around the rear exhaust area. If you use the palm of hand and bang on the fuel tank skid plate it produces a metal clang.
Thanks for that. Was your problem an audible rattle or an actual vibration in the body of the vehicle?
Metallic clanging resonance noise (it doesn’t shake the car) but only at certain rpm around 1800 rpm (mine was mild). But it’s now gone unless you go looking for it.
Thanks for that but its definitely drive drain vibration.
I have exact same thing just for the record. Have not looked at the heat shield “modifications” but will do when less mud around!
