Lewis Hamilton received a new-spec MGU-K element to kick off the British Grand Prix weekend, with Mercedes insisting the change is a precautionary measure.
Mercedes was initially planning to change the component at next weekend's 70th Anniversary Grand Prix at Silverstone, but decided to bring forward the change to ensure a better level of reliability and after "anomalies" were observed in Hungary.
All other Mercedes-powered drivers - including Hamilton's teammate Valtteri Bottas - will receive the updated Motor Generator Unit - Kinetic at next week's round at Silverstone.
"It's a precautionary change one race earlier than planned due to some data anomalies after Hungary," a Mercedes representative told Motorsport.com.
"It's an updated spec of MGU-K for reliability reasons, which will be on all cars from next weekend."
As a reminder, drivers are allowed a total of three MGU-K elements for the entire season.
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