𝐏𝐨𝐥𝐞𝐬𝐭𝐚𝐫 𝟓 𝐇𝐢𝐭𝐬 𝐭𝐡𝐞 𝐑𝐨𝐚𝐝 𝐖𝐢𝐭𝐡 𝐁𝐜𝐨𝐦𝐩 𝐁𝐢𝐨-𝐁𝐚𝐬𝐞𝐝 𝐌𝐚𝐭𝐞𝐫𝐢𝐚𝐥𝐬

Bcomp, a Swiss pioneer in high-performance flax composites, has partnered with Polestar to bring its lightweight bio-based materials into the new Polestar 5 four-door electric grand tourer (GT). The vehicle features Bcomp’s ampliTex™ and powerRibs™ technologies in the front seatbacks and tailgate structure, reducing the use of virgin plastics.

The collaboration began during the development of the Polestar Precept, a concept car and evolved into large-scale production for the Polestar 5. Together, the companies developed a bespoke ampliTex flax fabric known as the “Polestar Signature Weave”, designed to serve both structural and aesthetic functions in the interior cabin. This material has since become a defining feature of Polestar’s minimalist and transparent design language, engineered and tested for durability and performance across thousands of cars in global markets.

Driving sustainability transparency for the automotive industry:

The Polestar 5 carries a cradle-to-gate carbon footprint of 23.8 tonnes of CO₂ equivalent (tCO₂e) per vehicle. Polestar credits Bcomp’s flax-based composites with using 50% less fossil-based material and being up to 40% lighter than the traditional plastics they replace. Depending on the application, Bcomp’s natural fibre composites can also reduce the cradle-to-gate CO₂ footprint of components by up to 60%.

Polestar has published full lifecycle assessments (LCA) across its vehicle range since 2020, including the Polestar 5, published in March 2026. These cradle-to-gate assessments account for emissions generated from raw material extraction through to vehicle manufacturing, providing a transparent benchmark for future reductions.

The Polestar 5 GT delivers up to 650 kW (884 hp) and 1,015 Nm of torque, with a WLTP range of up to 678 km. Its 800V electrical architecture and 350 kW DC charging capability allows the battery to charge from 10% to 80% in as little as 22 minutes.

To mark the launch, a fleet of six Polestar 5 cars undertook a 6,000 km drive across nine countries, travelling from Polestar’s headquarters in Sweden all the way to the Sahara Desert in Morocco to demonstrate the car’s long-distance grand touring capability.

From the field to finished interiors

The Polestar 5’s front seatbacks combine Bcomp’s core ampliTex™ and powerRibs™ technologies with natural fibre polypropylene (NFPP).

ampliTex™ is a reinforcement fabric woven from European flax fibres that are processed mechanically, reducing the energy and emissions intensity compared with synthetic alternatives like carbon fibre or glass-reinforced plastics.

powerRibs™ is a proprietary three-dimensional reinforcement grid made from flax, inspired by the vein structure of leaves. Applied to the rear of a panel, it increases bending stiffness, allowing the component to be made thinner and lighter without sacrificing structural integrity.

The visible finish inside the vehicle is Bcomp’s “Polestar Signature Weave”, a two-tone material that functions as both a structural element and a design surface, removing the need for added decorative layers.

The Polestar 5’s tailgate structure also incorporates Bcomp’s powerRibs™ technology, extending the use of natural fibre composites beyond the interior. All Bcomp components used in the vehicle have been validated to meet stringent automotive standards for durability, safety, UV resistance, scratch resistance, and long-term ageing performance.

Unlike conventional carbon fibre composites, which are typically landfilled or incinerated without energy recovery at the end of their service life, Bcomp’s flax-based materials offer more practical end-of-life pathways. Production scraps can be recycled into materials for injection moulding applications, and thermoset flax composites can be incinerated for energy recovery, helping recover value from the biogenic carbon stored in the material.

The Polestar 5 development process was managed with the intensity and tight timelines of a race programme, drawing on the expertise of engineers with motorsport backgrounds and Colour, Material, Finish (CMF) designers to resolve structural challenges — like using a bonded aluminium architecture to keep the car compact, rigid, and light — within Polestar’s design language.

source : Bcomp