The Indian heavy vehicle industry, a cornerstone of the nation's logistics and transportation framework, plays an integral role in economic development. This thesis, titled "Quality Enhancement in After-Sales Services for the Indian Heavy Vehicle Industry: Market Dynamics, Customer Expectations, and Technological Innovations," explores the dynamic interplay of market trends, regulatory challenges, and technological advancements that shape after-sales services in this sector. The research investigates the sector's shift towards sustainability and digitalization amidst regulatory transformations like Bharat Stage VI (BS VI) norms. With a focus on optimizing service quality and operational efficiency, the study integrates dealer feedback, market analysis, and case studies of leading manufacturers such as Tata Motors and Ashok Leyland.