Well, it may be a good idea for you to say in the ad something along the lines of:
"The car will soon be due an Inspection 2 service. I am willing to have this service undertaken at a BMW dealer prior to purchase, or the buyer can have £1000 taken off the price of the car and undertake the service at their leisure."
I personally think that would hugely appeal to a buyer, as it means they can get it done themselves if they want to, and it demonstrates you are someone who doesn't shy away from running the car properly.
"The car will soon be due an Inspection 2 service. I am willing to have this service undertaken at a BMW dealer prior to purchase, or the buyer can have £1000 taken off the price of the car and undertake the service at their leisure."
I personally think that would hugely appeal to a buyer, as it means they can get it done themselves if they want to, and it demonstrates you are someone who doesn't shy away from running the car properly.