In the same years, the design bureau of automotive production gained strength. It was for the first time in the USSR that the construction of a trailer for passenger cars - 81024 - was developed. Special tow units for all models of domestic cars were developed.
On March 29, 1977, the State Attestation Commission decided to assign a quality mark to ZIL-MMZ-555 dump truck.
In the late 1970s, the company completed the construction of a new 30,000th building for assembling of dump trucks and began to equip it.
In 1980, the main conveyor of the body was installed.
A significant milestone in the plant metro car building was the development of structures and the development of the production of new metro cars - models 81-717 and 81-714. New cars had many distinctive features. Head cars (with the control cabin) and intermediate cars (without the cabin) appeared, which allowed to increase the carrying capacity of the train by 10% and to increase the power of the traction motors. Based on these models, export modifications of these cars were developed.
In September 1981, Mytishchi Machine Building Plant received its symbol: on the high pedestal, near the central entrance hall, an architectural and spatial composition was established - a metro car flying along the tunnel. The designers of the laboratory of the technical aesthetics of the plant V. Ya. Puzakov, I.P. Staskevich and A. S. Novikov designed and executed the project.
In September 1984, VDNH opened the exhibition "Automotive Industry - 84", dedicated to the 60th anniversary of the Soviet automotive industry. The presence at the exhibition of the Mytishchi plant products: dump trucks ZIL-MMZ-554 M, ZIL-MMZ-4505, trailer ММЗ-8113, metro car and others testified that the plant's products were widely recognized and enjoyed well-deserved authority among users.