@Pollytunnel,
Age is not a barrier to life or even applying for a grant, particularly not for a WAV as they are seen a priority. Please apply. https://www.motability.org.uk/grants/
We were/are in the same position, the Advance payments are incredibly high for Wav’s so we were forced into nearly new due to pricing. Luckily we were able to extend the lease for a further two years. But we are approaching the point where we will have to ‘go again’ and are really in a quandary. To get the new version of the Wav we have now the AP is 20k+ and the chance of getting the same nearly new is almost impossible as we need side entry and they are as rare as hens teeth. It looks like we may be forced into buying the vehicle we have now from Motability and face the financial dangers of running a six year old van.