simply sounds like u should of have the car inspected with a machanics report, as RWC s only to get the car under ur name and on the road.
RWC just means its safe enough to be on the road with out causng and accedient.
Machanics report is more so to tell u wat is wrong wth the car , oil leaks, loose seat belt reclners, dash lights, smoking exhast, diff problems everything over the whle car, they even check to make surethe air con works.