Sustainable Materials for Automotive Interiors: Trends, Challenges, and Circular Design Strategies

As sustainability becomes a strategic priority across the automotive industry, the development and integration of eco-friendly materials for vehicle interiors are gaining unprecedented momentum. This paper investigates current trends, key challenges, and circular design strategies that are shaping the transition toward sustainable interior components. Emphasis is placed on the adoption of natural fiber composites, recycled plastics, bio-based polymers, and emerging alternatives such as mycelium-based and biodegradable materials. The study further explores end-of-life considerations, design-for-disassembly principles, and policy frameworks such as the EU Green Deal and Extended Producer Responsibility. While the shift toward sustainable materials offers clear environmental advantages, challenges remain in terms of cost, scalability, and standardization. Through a synthesis of market projections, industry practices, and innovative case studies, this research highlights how sustainable material strategies can support long-term environmental goals while aligning with functional and aesthetic requirements of automotive interior design.