In the 1990s, M3 car 9776 was wrecked in an accident and subsequently scrapped. Its mate, 9775, was converted to a rail adhesion car and renumbered to E775. On January 22, 2013, car 9870 retired when it collided with a car at Brentwood station and then caught fire. It is currently stored out of service. Its mate, 9869, was mated with 9772, which lost its mate 9771 due to electrical failures on that car. Car 9932, which lost its mate due to unknown reasons, was also converted to a rail adhesion car and renumbered to E932. In 2018, M3 pair 9901-9902 was converted to a pair of rail adhesion cars. The cars were renumbered to E901-E902. One car in each pair was retrofitted with high-powered lasers from Laser Precision Solutions from the Netherlands to incinerate leaf residue.