MOT garages are monitored by DVSA on various metrics, one of which is pass rate vs other garages in the area. This is a common tactic to bring the pass rate down to avoid an inspection. Before the MOT records were made publicly accessible, less honest garages would simply not give the customer the fail certificate.
How much time do you want to waste pursuing this? An MOT fail for indicator lights followed by a pass will have absolutely no impact on the cars value.
How much time do you want to waste pursuing this? An MOT fail for indicator lights followed by a pass will have absolutely no impact on the cars value.