FIA president Jean Todt has cooled talk on a potential return of V10 engines to Formula One, as they would "not be accepted by society."
Many fans have called for V10 engines to make a comeback as the V6 turbo hybrid power units fail to produce a memorable noise out on track.
However, Todt has said that times have simply moved on since the V10 days and that there is no place for them in Formula One.
"It will not be accepted by society," said Todt in the FIA's latest Auto publication.
"We have a responsibility to run an organisation monitored by global society. And global society will not accept that.
"Indeed, I'm sure if you said, 'let's go back to engines from 10 years ago', many manufacturers would not support such a move. I'm convinced a minimum of three out of four would leave.
"Also, we know that stability is essential — firstly, to have as much competition as possible, and then to protect the investment.
"You cannot invest in new technology every year, it is not financially sustainable, and we already complain about the cost of racing, the of Formula One — a cost that for me is absurd."