McLaren endured a difficult start to a historic weekend at the Monaco Grand Prix, with the team marking its 1,000th Formula One race — a milestone shared only with Ferrari — but failing to show competitive pace in Friday practice. Reigning world champion Lando Norris finished sixth in the opening session before his car shut down with an electrical fault in the second, costing him valuable track time on a circuit where practice laps are especially critical. Teammate Oscar Piastri was no higher than seventh, and the team's Chief Technical Officer Rob Marshall acknowledged they need to address tyre, temperature, and setup issues ahead of Saturday qualifying.