Formula 1 supremo Bernie Ecclestone says he still wants to push on with plans for an independent engine from 2017, despite the idea having been rejected by teams.
Ecclestone and FIA president Jean Todt had hoped to push through the idea of a cheaper independent engine, but it did not get the support it needed at an F1 Commission meeting last month.
Instead, F1's manufacturers have agreed to come up with an alternative plan to ensure that the costs of customer engines are brought down within the next few years.
But Ecclestone still thinks that the alternative engine plan is the best way forward, and wants the rules should be changed to allow it to happen.
"We have to change the rules to allow for the introduction of a cheap alternative engine," he told German newspaper Handelsblatt.
"The new hybrid engines are simply too expensive. And we cannot wait.
"I still think we should have the alternative engine by 2017. I wish people in this business would think a bit more long term. But I will give it my all for F1 to remain a premium motor sports event."
Ecclestone has also said that news of a potential sale of F1 should be firmed up by the start of next season, having originally expected a decision by the end of this year.
"I think we will have a decision in the next couple of months," he said. "It's my hope that at the beginning of the 2016 F1 season we will know whether CVC wants to sell or not.
"There are people who would really like to buy F1. But CVC hasn't decided yet whether they want to quit or not."
Ecclestone also made clear that he had no plans to step down, even if a sale goes through.
"I haven't thought about it. But should someone buy F1 and he doesn't want me as a CEO I would have to take my leave, sure. But I like what I do. This is why I still do it.
"I don't have to and I don't need the money. I do it because I enjoy it."