George Russell’s Hungarian Grand Prix start collapsed when a Mercedes engine software issue kicked the anti‑stall system into action.
Engine Software Misfire
During practice a water leak caused by a kerb impact had already damaged the power unit, forcing a change before the race. The software glitch, discovered at the grid, sent the engine into an uncontrolled revs rise, preventing normal throttle response.
Launch Sequence Breakdown
At the five‑second cadence, Russell’s throttle dipped from about 30 % to below 10 % while the lights were still lit, a reaction to the revs spiralling past 12,700 rpm. Even with reduced aggression, the engine’s speed oscillated wildly, dropping under 12,000 rpm before surging back to 12,600 rpm.
Telemetry Insights
On the same lift the teammate, Kimi Antonelli, kept the revs steady at roughly 12,300 rpm. Russell’s engine peaked as high as 12,800 rpm, then salt‑shocked to 4,500 rpm at clutch release – well below the 5,800 rpm level Antonelli’s matched, triggering anti‑stall and losing critical launch momentum.
Impact on the Race
The malfunction cost Russell several positions, turning a weekend already laced with frustration into a difficult start that shaped his entire race. The Mercedes team flagged the reliability issue as “unacceptable” and the team radio had initially blamed a driver error.\n
Seasonal Implications
Russell confirmed that a similar mis‑behaviour had appeared in pre‑season testing in Bahrain, underscoring a systemic glitch that will need resolution before the next race. He voiced frustration and announced a break to recharge after a season marked by more setbacks than points.
With the engine problem demanding attention, the sequel of races will hinge on Mercedes fixing this launch‑sequence flaw before any further midfield gains become possible.
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