Through the toughest solar rally in the world with igus

SINGAPORE - Nov. 10, 2025 - PRLog -- The Sonnenwagen team from RWTH Aachen University and Aachen University of Applied Sciences has proven the power of sustainable mobility by securing fourth place in the Bridgestone World Solar Challenge 2025, the toughest solar rally on the planet. Covering 3,026 kilometers across the Australian outback, the team's solar car, Covestro Aethon, showcased cutting-edge engineering and lightweight design.

Built by over 40 students from disciplines including mechanical and electrical engineering, the futuristic three-wheeled vehicle runs exclusively on solar energy. After ten months of intensive development, the team relied on high-performance, lubrication-free polymer components from igus to meet extreme demands: minimal weight, maximum durability, and resistance to heat and vibration. Thanks to igus technology, the Covestro Aethon weighs under 185 kg, reaches speeds of 140 km/h, and operates efficiently without grease—reducing contamination risks during the rally.

"We were amazed to cut component weight by 80% compared to metal bearings," says Charlotte Teckentrup of Team Sonnenwagen. "This improved energy efficiency and driving comfort while ensuring robustness."

Despite an electrical fault that dropped them from pole position, the team clawed back to finish fourth with an average speed of 85 km/h over 36.5 hours. "Team Sonnenwagen has shown what true engineering is all about—resilience and innovation," says igus CEO Tobias Vogel, whose company has supported the team since 2015. "Every kilometer brings us closer to emission-free mobility."

The achievement underscores German engineering excellence and the promise of solar-powered transportation for a sustainable future.

Find out more about igus plain bearing technology at: https://www.igus.sg/plain-bearing