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Inside VW’s ID 3 Lightweight Body: Engineers Reveal the Data Behind a 100‑kg Weight Cut

Materials Innovation: From High-Strength Steel to Recycled Composites Volkswagen’s 100-kg weight reduction on the ID 3 is rooted in a rigorous, data-driven material selection framework. Engineers first quantified tensile strength, density, and cost across a triad of candidate materials: high-strength steel (HSS), advanced aluminum alloys, and carbon-fiber-reinforced polymers (CFRP)