Very hard to get an exact price (for free) but looking around the country to see what my Motability car with its low mileage is worth against one with higher mileage and I’m seeing about £1,000 difference, very roughly.
Its easy to get the same model match and year but a bit harder to get the condition of the cars from photographs and trim level but somewhere around a thousand is about right I think.
Not sure about Motability though but I thought I’ve read in the past that its the dealers who make any extra on the cars worth be it, low mileage or all the extras me and you pay for when we order the cars, for instance, we might add heated seats for £500 to the trim of any given model but Motability sell the cars at the trim level and disregard any extra’s so does that apply to mileage too.
My average return milage after 3 years is around 18,000 > 19,000 but this year with the car returning in October I think the milage will be about 15,000 > 16,000 or less if we have any more lockdowns.