I don't pay no vehicle excise duty not none whatsoever cos mostly as I don't own a motor.
But as I miss sitting for hours in congested traffic, dodging kamikaze cyclists and getting into arguments with other road users who may suffer road rage and stab me to death, I sometimes hire a vehicular conveyance.
Lottsa fun
If I ever do deign to drive my own personal motorised transport again I shall buy a titchy wagon that don't attract not no income to the government. Maybe a Fiat 500, if they're exempt, they come in nice colours, they do.