I could always have the towbar removed and buy a used Across, the offset is it was serviced by Mobility and oily rag and a good tyre kicking.
Suzuki offer similar to Toyota 10 year warranty service extensions, so long its got full service history, it would be no different to Motability full dealer service. The main downside, you haven’t owned a used one from new, but don’t really matter.
Its certainly still worth talking to the supplying dealer or Toyota and ask for some figurers if they bought it and the options of selling it back to you.
Theres also potential used RAV4 deals.