Thanks SpinaB, I have a private number plate which I’m switching over pre delivery but after your comments I’m going to go and try the car out again before proceeding.
I actually had my Mini in for its MOT this week and had a Mini hatch with 800 miles on the clock as a loan car. I was definitely more aware of the seats and after a 10 minute drive I did have a sore back and hip and my shoulder is still hurting me, I wonder if perhaps the seats just need to bed in – not much use when you have mobility issues but perhaps/hopefully your X1 will become more comfortable without you having to go through the hassle and financial loss of returning it.