George Russell's nightmare start in Hungary—dropping from P3 to dead last—wasn't the battery overcharge problem everyone assumed. Mercedes initially thought Russell hit the top of the pack, a 2026-era headache where holding high revs to spool the turbo charges the battery, and if it maxes out, the MGU-K stops providing load, boost collapses, revs spike, and everything goes haywire. Antonelli suspected that in the cool-down room. Wrong. Overnight analysis found a rev control glitch on the grid. Russell was fighting wild rpm swings in the seconds before the start—he mentioned the engine "revving all over the place"—and when he tried to dial it back with the throttle, he happened to be at 10% application when the lights went out. Instant anti-stall. Hungary's unusually long start sequence, 13 seconds from blue lights to launch versus the typical 10, may have stretched the problem window. Russell recovered to seventh but is fuming: "I've never had a season like this in my whole career."

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