Integrating life cycle assessment with lean assessment matrix: A framework for sustainable automotive manufacturing evaluation
Keywords:
Sustainable manufacturing, Automotive industry, Life cycle assessment, Lean assessment matrix, Performance evaluation, Waste prioritizationAbstract
Automotive manufacturers face growing pressure to improve efficiency while reducing environmental impacts, but standard waste assessment tools largely overlook energy use and material losses. This study develops an integrated evaluation framework that combines a lean assessment matrix with life cycle based environmental indicators to support waste prioritization in automotive manufacturing. A rapid review of 27 relevant articles informs the framework design, resulting in a matrix that links process wastes to non-value added activities, root causes, and five performance indicators: economic performance, process flow, quality, energy use, and material and waste generation. A scoring system based on a discrete rating scale is proposed to convert heterogeneous operational and environmental data into severity scores and priority ranks for each waste type. This enables comparison of improvement options on an everyday basis that reflects both productivity and environmental impact. The framework extends lean assessment beyond traditional operational measures and provides a structured basis for sustainability-oriented decision-making in automotive manufacturing.
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