abuse of mobility (dla including those who choose not to get a car ) is at 0.5% according to governments own statistics and they don't have a reason to underestimate seeing as they are the propagators of the idea that wide scale abuse was going on compared to those getting something by not paying taxes due it is insignificant
look at Apenix 1
https://www.gov.uk/government/upload...fy-2014-15.pdf