Renault mandates new alternator

Renault has switched all its Formula 1 teams onto its newest specification alternators for this weekend's Brazilian Grand Prix, following Mark Webber's failure in the United States . With post-race analysis of Webber's broken alternator from last weekend showing a repeat of the problem that put Sebastian Vettel out of the European and Italian Grands Prix, Renault believes the safest solution is to make partner teams Red Bull, Lotus, Williams and Caterham all use the latest version

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