Ross Brawn says the 2021 engine rules will be deemed as successful if they bring in an independent engine manufacturer into the sport.
Formula 1's sporting boss and his team of specialists have put together a proposal outlining the power unit of the future.
The draft which was presented to teams last November features less sophisticated hybrid technology which discards the MGU-H element and relies partly on standardized electronics, enhanced sound thanks to an 3,000rpm increase and overall stricter development potential.
The 2021 cheaper platform partly caters to independent engine suppliers, the presence of which Brawn views as paramount to F1's future success.
"The 2021 engines have to be more economical, cheaper and make more noise," Brawn told Sky Sports F1.
"They have to be regulations that an independent engine supplier could manufacturer.
"We’re not saying we’ll get an independent engine supplier but there has to be the technical specification that enables an independent supplier to join.
"I think that is a really important barometer because if we achieve that it means we’ve put the engine in the right place both technically and economically.
"An engine today just on its own is £1m, and that is just to buy the engine, it doesn’t include the development or design and the other things that go on.
"That is far too expensive. We need to drive down that cost to make it more economical."
Formula 1, the FIA and the teams continue to debate the tabled proposal. Ferrari's Sergio Marchionne has threatened to quit F1 if Brawn persists in going down the path of standardization.
Mercedes' Toto Wolff is equally skeptical on the draft proposal but is keeping an open mind nevertheless, while Renault's Cyril Abiteboul is advocating a complete status quo, saying the current power unit is a proper foundation to build on.
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