Lance Stroll

Aston Martin · Canadian

Already breached the allocation once this season, with a fourth Energy Store and fourth Control Electronics unit fitted without approval ahead of his home Canadian Grand Prix (round 5), sending him to a pit-lane start. Then fitted a fifth Energy Store and fifth Control Electronics unit under parc fermé conditions ahead of the British Grand Prix (round 9) — two over the allocation for each — drawing a 10-place grid penalty (capped at last on the grid, since he'd only qualified 21st). Then fitted a fourth MGU-K for the Belgian Grand Prix (round 10), one over the allocation, drawing a further 10-place grid penalty (qualified 22nd, started 20th). Has also churned through three gearboxes after an in-race failure at round 7. By a wide margin the highest power-unit risk on the grid.