Brendon Hartley posted a 3m26.013s with around 50 minutes of the opening three-hour first practice session remaining in the #8 Toyota GR010 HYBRID - a time that is almost a second faster than Porsche managed at last Sunday's Test Day.
Callum Ilott's 3m26.610s in the #12 Jota-run privateer Porsche 963 LMDh had topped the timesheets for much of the session, before the Briton was relegated to second.
