Image source: RacingNews 365
P1racenews AI automatic summary:
McLaren did not run in the afternoon on the fourth day of testing in Barcelona. Now it is clear why.
Oscar Piastri tested McLaren’s 2026 F1 car after Lando Norris drove it the day before, completing 48 laps in the morning at Circuit de Catalunya but encountering fuel system issues in the afternoon, halting further track time.
McLaren confirmed the problem and has completed a total of 124 laps over two days of testing.
The team has one more day of testing left, with Norris and Piastri sharing driving duties for half a day each on Friday.
