Daniel Ricciardo believes there was a “fundamental” issue with Renault’s power units after the manufacturer endured a troubled weekend in Mexico. While Max Verstappen recorded victory, Ricciardo retired after just a handful of laps, having taken on new power unit elements pre-race, consigning him to 16th on the grid. Ricciardo’s exit came on a weekend in which Toro Rosso was plagued by problems, with Nico Hülkenberg also failing to finish, due to an ERS issue. “At the start I did what I could, it was pretty close and there was a lot going on, but I thought I made quick progress,” said Ricciardo. “I told Helmut [Marko] this morning that I would...
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