Andi,
First, sorry for your loss. I know first hand that disposing of property can be messy and raise financial issues amongst the various heirs. Except maybe for money, I think everyone here (considering that "here" is the A7/A10 Forum) thinks you should keep it and ride it. Have you tried it?
As far as I can tell, you haven't mentioned where in the world you are, but by the backdrop to the photos, I am guessing somewhere in GB. I see there's a tax badge, but I don't know that those are still required.
Richard L.