More than 50,000 disabled people have had specially adapted vehicles taken away since changes to disability benefits in 2013.
The Motability scheme entitles disabled people to lease a specially adapted new car, scooter or powered wheelchair using part of their benefit.
But the charity says that 51,000 people have had vehicles taken away since the benefits system was changed in 2013.
The government says there are more people on the scheme now than in 2010.
Changes to the assessment process came in five years ago when personal independence payments (PIPs) were launched to replace the disability living allowance (DLA). Read on.