Currently, all automotive industries are faced with the need to respond to rapidly changing customer needs, their desires and the fluctuations in the market demand. During the plant visit and subsequent discussion made with the production department and also according to the operation process chart put up in the process study, it was noticed that the efficient time involved in the sub assembly process is less. Hence, this project work is conducted live to study the existing cycle time of a single model sub assembly line and suggesting improved methods to reduce the non-value-added activities, thereby reducing the cycle time in order to improve the efficiency of the sub assembly line and increase overall productivity. This case study is conducted in a leading garage equipment manufacturing industry in south India, which engages in manufacturing, designing and servicing garage equipment's. Currently, this plant is manufacturing 25 paint booths (1.4 paint booth assembly per shift) which the company foresees a growth in demand for paint booth assembly and gearing to scale up its production rate to 40 paint booths (2.5 paint booth assembly in a shift) including Sub assembly 6 which has been newly added in the paint booth assembly to meet out its monthly requirement and achieved.Copyright (c) 2022 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the Second International Conference on Engineering Materials, Metallurgy and Manufacturing.