Max Verstappen ended Friday at the Russian Grand Prix as the fastest man on track, suggesting Red Bull's new Honda engine is working nicely.
Taking a new ICE in Sochi will demote Verstappen five places on the grid, although the damage may not be too severe judging by his one-lap performance in FP2.
Leclerc, who had gone quickest in FP1, was three tenths off the Dutchman, with the other Ferrari of Sebastian Vettel surprisingly a second off the pace, although his quickest laps seemed to be run with traffic playing a role.
Lewis Hamilton was once again slower than team-mate Valtteri Bottas, who has a great record in Sochi. The world champion had a scary moment when encountering a slow-moving Alexander Albon at the high-speed Turn 3, but he was able to dive to the inside and avoid a serious collision.