McLaren arrive at the Singapore Grand Prix under pressure after a tough stretch of races. Team principal Andrea Stella acknowledged the MCL40 regressed following the latest updates, and the team accepted responsibility for a recurring problem affecting Lando Norris.
Norris labelled a straight-line speed deficit as seriously damaging and said he was uncertain the team could fix it before Marina Bay.
A tyre strategy call during the Malaysian Grand Prix, which saw Oscar Piastri pitted under disputed circumstances, was later called out as an outright mistake. Singapore's tight, low-speed street circuit is considered a poor fit for the car in its present state, making things harder for McLaren as they prepare for the race weekend.