Stellantis Reveals Aluminium-Intensive EV Design Study
New research shows how an aluminium-focused body architecture can significantly reduce electric vehicle weight.
Updated on Oct. 27, 2026 in Electric Vehicles
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Stellantis and Alumobility released a new study detailing how shifting to an aluminium-intensive design reduces body-in-white mass for electric vehicles. The findings demonstrate significant improvements in vehicle efficiency and overall weight reduction.
Why it matters
Reducing vehicle weight is essential for improving range and energy efficiency in electric vehicles. This research provides a roadmap for manufacturers to optimize structures and lower battery requirements through advanced material use.
The study using the STLA Medium platform as a model found a 20 percent total vehicle mass reduction and 421 kilograms in total weight savings. Energy consumption improved to 122 watt-hours per kilometre from a 140 watt-hours per kilometre baseline.
The players
Stellantis
Stellantis is a major multinational automotive corporation that manages a diverse portfolio of automotive brands.
Alumobility
Alumobility is an industry association that works to advance the use of aluminium in the automotive sector through research and technical advocacy.
The details
By replacing steel-intensive architectures with an aluminium-focused design, the study team achieved a 27 percent reduction in body structure part counts. Researchers analyzed secondary effects across braking, suspension, and electric motor systems to confirm the broader impact of the lighter frame.
Timeline
The findings were presented at the EuroCarBody 2026 conference held in Germany.
Roadmap
This study highlights a major industry shift toward material-focused light-weighting to combat the inherent weight challenges of current electric vehicle architectures. It marks a departure from traditional steel-heavy designs, signaling how manufacturers may rethink structural components to boost overall range.
Consumers could benefit from these design improvements through increased vehicle range and reduced battery costs over the life of their electric cars. While this study is currently theoretical, its adoption could eventually lead to lighter, more efficient vehicles reaching dealership lots.
The takeaway
Lightweighting through aluminium integration offers a clear pathway to optimizing the efficiency of modern electric platforms. Manufacturers are increasingly looking at these structural modifications as a primary method to improve consumer-facing performance metrics like range per charge.
Further reading
For more on emerging engineering trends, explore our Electric Vehicles section.
Source note: This article includes information reported by Auto Service World.
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