I might pay the £250 if it’s offered as it’ll move the car to renewal at new plate dates in March
It’s up to you of course but I really wouldn’t pay £250 for something that is in no way your fault. I’d call Motability and try and find a compromise. If you found an extra £250 deposited in your bank account, you’d be chuffed. I understand wanting to get the new car sooner but the fact they’ll charge you because it’s turned up early is insulting. You’ve done your bit, found the car, arranged everything, waited patiently, etc. Why should you have to give them extra to get the car you’ll be paying for?
That’s just me though. I do understand the temptation to get it over with.