Going to need more context if you want answers. Do you want to replace the screen with another screen? There's a guide for that at Evilution:
www.evilution.co.uk
451 LCD Retrofit | Evilution

You're right. I wasn't detailed enough in my original post. In the 2013 smart Fortwo Owner's Manual they describe additional functionality such as fuel consumption, messages, expanded odometer and trip statistics that are displayed on the multifunction display and accessed using a button on the end of the righthand stalk (wiper functions).Going to need more context if you want answers. Do you want to replace the screen with another screen? There's a guide for that at Evilution:
451 LCD Retrofit | Evilution
www.evilution.co.uk
So far, my research is reaching the same conclusion.I looked a while ago myself. Saw a cluster for sale, but without the stalk, and the likely requirement to program, you'd probably be better off looking for a car with the features there already. And then the question of where is the car mileage stored? In the cluster? Elsewhere?