Show your dealer this link about the wheelchair option;
https://www.motability.co.uk/products/adaptations/lease-a-manual-wheelchair-with-your-next-car/
We’re picking our B Class up tomorrow, as far as I’m aware it doesn’t have sliding rear seats but I’ll ask my dealer if he knows when they’re supposed to be starting fitting them.
If I seem a little strange, that's because I am.
Skoda Karoq SEL.