Hungarian Grand Prix – Mercedes' Valtteri Bottas has needed to change his power unit during opening practice in Hungary, but won't take a penalty. Valtteri Bottas wasn't able to put in a laptime during the ninety minute opening practice session at the Hungaroring in Budapest. The Finn got out on track early in the session to complete an installation lap but was quickly back in the garage with his mechanics poring over the W10. After a while, with no sign of him coming back out on track, Mercedes revealed that they needed to carry out a power unit change on Bottas' car after identifying a problem with the one fitted. In a statement, they said that: 'We will do a PU swap with Valtteri...
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