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Technical Combined from 3 sources

Mercedes investigating battery-related reliability failures

Mercedes believes it has identified the main risk behind its recent Formula 1 reliability problems after a run of battery-related failures. Reports said the issues appeared to come from the same area of the battery and cost Kimi Antonelli and George Russell valuable results.

F1 Hub Newsroom
June 20, 2026
Mercedes investigating battery-related reliability failures

Multiple reports said Mercedes has made progress in understanding a series of recent reliability failures linked to its power unit battery. According to those reports, the problems are believed to originate from the same part of the battery.

The issue proved costly on track, with George Russell and Kimi Antonelli both suffering retirements. Crash.net said Antonelli lost significant points in the title race when reliability trouble struck in Barcelona.

Mercedes is now focused on fixing the problem to prevent further failures. Antonelli described the setback as a "bump in the road" while urging the team to find a reliability solution.

Sources (3)

Summaries are synthesized by F1 Hub from the linked sources. Follow the links above to read the full reporting at each outlet.