If a vehicle is fitted with extras like anti-lock brakes / traction control etc., is it an MOT fail if these are not functional, particularly when considering that they may have been specified as optional extras when the car was first purchased?
And, would it be permissible to fit a conventional braking system to a car previously fitted with an anti-lock system - given that the 'new' brakes would satisfy the MOT braking test?
Thanks for any responses.