Noticed the rear end was not sitting level one side is 25mm higher that then other, same when car is running.
does anyone know what the correct height should be so i can determine which side is at fault or what the cause could be?
Thanks

its a 2016 XJ

 

dazak, when I played with my car, I noticed that when I measured from the center of the wheel to the top of the wheel well, I was getting an almost exact 400 mm. I would measure all 4 wheels (from center of the wheel to the top of the wheel well) and you will most likely find that 3 are going to be fairly close to 400 and the 4th is going to be different. So, you may see say 395 on the left front, 403 on the right front, 405 on the left rear, and 430 on the right rear. This would indicate that your right rear is the problem.