Due to the importance of both environmental protection and economic development, environmental auditing and accounting is a crucial subject. To assess the acceptable amount of environmental deterioration and the level of development, a detailed analysis of the benefits and costs of environmental harm is required. This paper provides guidelines on economic, social, and environmental issues for green accounting and reporting practises (GARPs) in the Indian automobile industry. A critical aspect in GARP is the implementation and evaluation of key performance indicators (KPIs). The data analysis for this work uses both qualitative and quantitative methodologies. A systematic questionnaire was utilised to gather the data, and barriers were found using the MINITAB analysis of variance (ANOVA) programme. The reliability of the identified KPI was tested using reliability analysis. The weights of KPI are calculated by analytical hierarchical process (AHP) analysis. The study report identified the lack of knowledge and inadequate strategic planning as significant barriers with a mean value of 3.53 and 3.3, and the calculated index value by AHP analysis for economic, social, and environmental factors is 0.364, 0.342, and 0.294. The identified weight of each GARP-KPI helps to automobile industries with self-assessment. It also supports improving the present situation by comparing the organisations on the basis of the KPI of GARP. This method compares the entire GARP performance and serves as a useful manual for an organisation looking to improve its green audit and reporting procedures.