Christian Horner admitted Red Bull did not use KERS on their car during the Australian Grand Prix.
Horner told the BBC the team tested KERS on Friday but decided not to race it due to concerns over its reliability.
The team did not admit they’d switched it off as they were concerned about being overtaken at the start of the race.
However Sebastian Vettel got away cleanly and held his lead.
However it meant that later in the race Mark Webber was unable to use KERS while trying to pass Fernando Alonso.
2011 Australian Grand Prix
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