Red Bull team principal Christian Horner would like to see his team narrow the gap in qualifying, but is not particularly enthusiastic about Renault providing the extra pace.
Red Bull have made steps in the right direction as they look to try and force their way onto the same playing field as Mercedes and Ferrari, but that prospect is still some way off.
"The car is getting stronger and stronger under race conditions, and again it was a very competitive Grand Prix for us in Hungary," said Horner.
"So if we can just find that little bit more engine performance… You saw in qualifying that Max [Verstappen] was second-quickest in Q1 and Q2, but you get to the latter part of qualifying and you need that little bit extra to go with our major competitors."
Horner was then cold in his response about whether Renault would be able to provide that extra pace soon.
He added: "I think you need to speak to our engine supplier to understand what their thoughts are regarding engine introduction."
Looking ahead to Spa, the Red Bull boss believes their chances of success are nothing more than "reasonable".
"Hopefully we can be reasonable there," he said. "Austria, we were reasonably competitive there – I think particularly on Sunday.
"On Saturday we are going to struggle. I can imagine us being fifth and sixth on the grid on Saturday and quicker than that on Sunday.
"The thing I can say about Spa is that you have the ability to overtake there."
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