F1 Barcelona test | First issues for McLaren: Temple explains
Oscar Piastri, during yesterday’s Barcelona testing, was unable to complete the full program scheduled by McLaren. The reason was explained by the team.
McLaren made its debut in the Barcelona tests on Wednesday, with reigning world champion Lando Norris driving the new MCL40. Yesterday, January 29, 2026, it was Oscar Piastri’s turn behind the wheel. The Australian driver, however, encountered some problems that forced him to interrupt his track activity. McLaren’s Technical Director, Performance, Mark Temple, provided an explanation for the interruption.
Through a statement published by McLaren, Mark Temple detailed the work carried out by the Woking team during the first two days of testing in Barcelona: “Second day on track, with several positive aspects to take away. We have a good understanding of the car from a baseline reference point of view. In this shakedown, the most important aspect for the drivers is to understand how the new car works, how the Power Unit interacts, and the energy management process.”
However, a problem forced the Papaya team to not complete the full program planned for Oscar Piastri. The Technical Director, Performance, explained what happened with car number 81: “Of course, it’s a shame we couldn’t get out in the afternoon because, at such an early stage of the season, every minute on track is valuable.”
Mark Temple added: “We encountered an issue with the fuel system, which prevented us from completing the full number of laps we had planned. The car is very complex, so we decided to bring it back to the garage and dismantle it to fully understand the origin of the problem, in preparation for tomorrow’s track activities.”
Mark Temple’s transparency regarding McLaren’s fuel system issues reflects the high-pressure environment of the 2026 F1 shakedown, where even the reigning champions must navigate a steep learning curve with their new Power Unit integration. By prioritizing a deep-dive investigation into the MCL40’s fuel delivery rather than opting for a quick fix, McLaren is betting on long-term reliability over short-term mileage—a strategy that will be tested as they head into the final days of the Barcelona sessions. As Oscar Piastri and Lando Norris prepare to return to the cockpit, the team’s ability to solve these early technical gremlins will be crucial for establishing a solid performance baseline before the official pre-season tests in Bahrain. This focus on internal system harmony suggests that while the start was turbulent, McLaren remains dedicated to perfecting the complex energy management systems that will define the upcoming championship battle.
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