In the days before EVs the big complaint was the higher AP for automatic cars compared to manuals, in fact, at some points manual cars had the next spec level up from auto cars, it still happens, but gas been overshadowed by ev APs…
As has been said, apart from specific WAVs and some fitted extras, like ball steering, left/right accelerators, Mitability buy from the same pool as other lease schemes and private buyers.
The only two added to all Motability cars was metallic paint (better for resale) and if no rear camera fitted, rear parking sensors