Renault says it is "concerned" by the lack of progress made by Liberty Media over Formula 1's proposed 2021 rules changes.
As part of a deal to boost its commercial rights income when it returned to F1 as a works team in late 2015, Renault is the only team so far committed to F1 beyond '20.
But it is keen to see promised changes on cost caps and prize money distribution introduced, and is urging Liberty to speed up decisions over post-2020 rules.
Renault's F1 president Jerome Stoll said he wanted to speak directly to F1 chairman Chase Carey to encourage him to move quicker.
"It is our duty to make the decision happen," said Stoll.
"We are pushing and I've had several discussions with Chase Carey about that.
"He promised to us that the decision would be taken by late last year, but no decision has been taken.
"So I will push as soon as I meet him again, in Melbourne or maybe at the Barcelona test.
"I will restart [the talks] again to push him. I will say, 'Please, what is your planning? When can you take a decision?'
"It is very much important for us. It is crucial. Crucial."
Stoll said decisions over F1's future are particularly important to Renault because it thinks the series' landscape is in need of a shake-up.
"We are very much concerned by the evolution of the Concorde Agreement and by the fact that Liberty, who is the owner, should decide," he said.
"It is absolutely obvious that the current situation, in the way it is managed with the redistribution of rights and the way people are spending money for this competition, could not be a good answer for us.
"So we are really fighting, along with Liberty actually, to have a better redistribution of the [commercial] rights [income] and to have this cost cap.
"We also have to have a better show because, at the end of the day, people, if they are ready to pay for soccer and to pay for any subscription for soccer, it is because there is a show.
"So we need to readdress this point and to have a better show."
Stoll added Renault was in favour of a cost cap being introduced because it is not prepared to overspend to win.
"The cost cap is more or less in line with where we are today," he said.
"OK, we will have to step up again a little bit, but we are not far.
"We think we are in the centre of gravity with regards this discussion because maybe we are the only car maker who is a generalist car maker and is much more sensible on this financial point.
"For Mercedes or Red Bull or Ferrari, winning is a must whatever the cost. For us winning is important, but we look at the costs."