Hi Shane, Many thanks for getting back regarding boot space capacity for a wheelchair user. To hopefully narrow down the search, we will be in the market for a new Plug -in Hybrid with hatchback body style. To complice matters a little, we need to be carefull of the height of the door sil , the lower the better so that my wife can get her feet in. We would prefer to stick to a 'compact' style such as Corsa for driving accessibility but looks like their boot sizes are limited to max 350 Ltrs. We may need to compromise. Hope this clarifies.