Renault have launched an investigation into the engine issue that caused Sebastian Vettel to retire in Melbourne on Sunday.
After a solid Friday, the reigning World Champion's Australian Grand Prix weekend went from bad to worse on Saturday and Sunday.
A software issue during qualifying meant he lacked the pace to make it into Q3 while his race on Sunday came to a premature end when he was forced to park his RB10.
Red Bull later confirmed that it was an "engine failure" which Renault's head of track operations Remi Taffin says the French engine manufacturer are now looking in to.
"Basically if you take his entire weekend, in FP1 it was quite a good step from Bahrain [testing], FP2 was OK, FP3 was a step down on driveability, qualifying was a step down [too]. We made it worse and worse and worse," Taffin told Autosport.
"We accept we don't have something consistent enough, but we've learned again. It is sometimes difficult to pick these issues with the mapping or the software.
"We worked around this for the race, [but] Sebastian had a loss of full throttle power, which we trace now and we will try to correct for the next race."
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