Manamal: Four-time world champion Sebastian Vettel admitted Red Bull were facing serious problems after he failed to complete a lap in testing on Saturday, just two weeks out from the start of the new season.
Vettel's car suffered electrical issues which meant he stopped on the installation lap at Sakhir and then spent the rest of the day frustratingly kicking his heels in the garage.
The setback came just a day after teammate Daniel Ricciardo had completed 66 laps in the second Red Bull for the Australian's most convincing outing this winter.
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