Renault are confident that in time they will catch Mercedes as the latter has less room for improvement.
The introduction of the 1.6-litre V6 engines saw Mercedes come to the fore, winning 16 of last year's 19 races as well as both World titles.
That form continued into 2015 where once again the Brackley team and its power unit are the package to beat.
In sharp contrast, Renault have come in for some stick from their teams as reliability and a lack of pace have hampered them.
The French engine manufacturer, though, did get some affirmation from Red Bull and Toro Rosso in the wake of the Malaysian GP with both outfits stating there had been some progress.
And Renault reckon it is only a matter of time before they catch Mercedes given the law of diminishing returns.
"I would never say that we need to change the regulations in order to be assisted to catch up," Renault Sport F1 managing director Cyril Abiteboul told ESPN.
"I think we believe there is absolutely no reason why we could not catch up. I guess the question is just when and the amount of time needed to catch up.
"At some point at time the law of diminishing returns will kick in and it will kick in for Mercedes first and then Ferrari. This law will help us in catching them, although I'm not saying we are waiting for them to be limited."
"But," he added, "clearly we are behind and need to develop faster and that will be supported by this law.
"That will happen, we have to be a bit patient but also we have to build a plan so that this delay and period that is difficult for the Red Bull-Renault group is as short as possible."
Abiteboul, though, concedes that Renault need to use their tokens wisely rather than use them all.
"Clearly one thing we need for the next two years is to really have the right strategy and perfect alignment with all entities that are involved to make sure we make the best possible use of the tokens we have available.
"This season we have some tokens remaining and more than any other engine manufacturer, so we need to make very good use of that and next year there will be quite a lot [of tokens to spend].
"We pretty much have a completely new engine [this year] and we only used 20 tokens, so you can do quite a lot of changes with the tokens we have and we may actually be more limited by funding than by tokens because it's quite expensive to use those tokens.
“The one thing that where we need to be very careful is that there is no guarantee that you get performance improvement when you use a token and that's why you have to use it extremely wisely.
"It's not a race of token usage and from my perspective and the next discussion we must have [at Renault] is that the objective is not to consume tokens but to improve lap time.
"That's why we need to stay calm, not overreact and build a plan not just for this year but next year and also 2017. It's not the job of one winter to cover the type of deficit we have [to Mercedes]."