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.
Gallery: The beautiful wives and girlfriends of F1 drivers
Keep up to date with all the F1 news via Facebook and Twitter
Sebastian Vettel admitted that Sunday’s tribute laps to Ayrton Senna and Roland Ratzenberger at Imola…
Mercedes F1 boss Toto Wolff hit back last weekend in Imola at Christian Honer’s claim…
Sergio Perez’s run to P8 in Sunday’s Emilia Romagna Grand Prix looked as uninspiring as…
Alex Albon (Retired, Lap 51): 5/10 Alex Albon's star has dimmed this season, in large…
Carlos Sainz admitting to enduring an unenjoyable Emilia Romagna Grand Prix at Imola, highlighting the…
Five years ago today, Formula 1 and the motorsport family at large mourned the loss…