Three Red Bull DNFs in three races “certainly a concern”

Perez and team-mate Max Verstappen were both sidelined in the closing laps of the Bahrain Grand Prix last month by a fuel pump issue, costing the team P2 and P4.

A separate fuel system problem emerged on Verstappen’s car with 20 laps to go in last Sunday’s Australian Grand Prix, forcing him to retire and leaving the reigning world champion 46 points off early standings leader Charles Leclerc.

Verstappen called the reliability struggles “unacceptable” after the race,…