Red Bull Team Principal Christian Horner has said that they will have to wait till the Russian Grand Prix in October for their engine upgrades from Renault. Until then, it is something the Milton Keynes based outfit will have to live with.

This comes after Daniel Ricciardo’s engine failed in the second free practice session for the Hungarian Grand Prix. Speaking at the team representatives press conference on Friday, Horner said that he expects Renault, who have not used any of their twelve development tokens, to roll out their updated engine in October.

“I don’t think there is anything scheduled now before Sochi,” said Horner.

“That probably is the earliest that we are going to see any form of development or use of the tokens, so the engines we’ve got at the moment are what we’re having to live with for the time being,” he added.

Horner confirmed that it was engine No.4 that failed on Ricciardo’s car, and that engine 5, which was first used in Austria will now be used until Sochi.

“Engines four and five of what the drivers have been using between Friday and Sunday racing, unfortunately Ricciardo has now lost engine four, so he’s only got engine five, that came into service for the first time in Austria, to get him through the next few races.”

Red Bull are hoping that they will not incur any further engine penalties until Sochi.

“Only time will tell as to whether we can get to Sochi or not without incurring another penalty before introducing an upgraded unit.”

Horner conceded that the long lead times in engine development slows down the progress.

“They are making progress, they are making strides. I think the problem with engines is it’s – unlike the chassis – long lead-time items”