Mercedes swaps George Russell's power unit before Hungarian Grand Prix

During Q3 of the Hungarian Grand Prix, George Russell's Mercedes showed a loss of water pressure in the power‑unit after he struck a kerb at turn 4. The water leak forced him to stop the car on the pit straight and the team instructed him to abandon the lap. Mercedes then announced that the compromised power‑unit would be replaced with a fresh internal‑combustion engine – the fourth of the season for Russell – which is within the FIA‑allowed allocation, so no grid penalty will be applied. Russell kept his seventh‑place grid slot, moving up to sixth after teammate Kimi Antonelli received a three‑place penalty for a yellow‑flag infringement. Team principal Toto Wolff confirmed the issue was a water‑leak, not a fuel problem, and that the new unit is of identical specification to the damaged one. The swap aims to restore performance after a weekend of tyre‑temperature and software‑calibration challenges that had hampered Russell’s pace in recent races.