Stoffel Vandoorne original 5-spot grid penalty in the US GP just got boosted to 30 following a last-minute power unit change by Honda.
The Japanese manufacturer detected an MHU-H issue earlier today and opted to change the component as a measure of precaution.
The McLaren driver had already incurred a 5-spot grid drop earlier in the weekend which, added to the latest 25-place demotion will leave the Belgian dead last on today's starting grid.
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