It remains unclear whether Lewis Hamilton will take on a new engine, and a subsequent grid penalty, at the Brazilian Grand Prix, with Mercedes neither confirming nor denying such a move.
In the build-up to this weekend's event at Interlagos, Red Bull advisor Helmut Marko revealed that he had heard "rumours" of Hamilton moving on to a fifth Internal Combustion Engine of the season.
Should that be the case, Hamilton would be hit with a five-place grid penalty, which would increase if additional elements within his power unit are changed and exceed his allocation for the campaign.
Wait for the official FIA documents
When asked by RacingNews365.com to confirm if Hamilton's car will be fitted out with a new engine in Brazil, a Mercedes spokesperson explained that they do not announce their engine plans in advance.
Any change will therefore only be confirmed when the FIA issue their official documentation regarding power unit changes.
Hamilton trails Red Bull rival Max Verstappen by 19 points heading into the weekend.
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