Eurostar says it is upgrading its new fleet to better handle extreme summer temperatures across Europe after recent deadly heatwaves. The company ordered 50 new double-decker, all-electric trains last year, and it is now making changes so the trains can operate in higher heat conditions. According to reporting, the upgrades are intended to allow the trains to withstand temperatures as high as 55C. The announcement links the technical improvements to the disruption and risks associated with unusually hot weather in parts of Europe, where heatwaves have caused deaths and strained transport systems. Eurostar’s plans focus on ensuring the reliability and safety of the trains during periods of extreme heat, rather than altering timetables or routes in response to a specific event. The upgrade work concerns the new rolling stock already planned for service, with the stated aim of improving performance in extreme weather scenarios. The company does not attribute a specific cause to the heat impacts, but positions the measures as preparation for future high-temperature conditions.