https://www.motability.co.uk/products/search/cars/
not many but are 11 under 1k that are an suv or mpv
VAUXHALL GRANDLAND X VAUXHALL GRANDLAND X HATCHBACK 1.2 TURBO SE 5DR AUTO [8 SPEED] £299
RENAULT KADJAR HATCHBACK 1.3 TCE PLAY 5DR EDC £395
SKODA KAROQ 1.5 TSI SE 5DR DSG £395
all are 50 mpg or over