Christian Horner says Formula 1 team bosses are nowhere near agreeing a way forward with the power units in 2017, after they were set the challenge of reducing costs, increasing noice, guaranteeing supply and power convergence.
It was agreed that those four criteria would be examined and suggestions put forward as to how to achieve them for next year.
Horner admits that whilst they are close to agreeing upon new chassis rules by the April 30 deadline, the engine situation remains up in the air.
"I think it’s a complex situation, but fundamentally there were four criteria that were requested by the governing body to be met to ensure stability moving forward," he explained on Friday.
"Those four criteria were: a significant reduction in cost to €12 million, the availability of supply or the guarantee of supply, power convergence to within a relatively small bandwidth and to address the noise.
"As we sit here now we are not anywhere near having met any of those criteria and I think unfortunately what will happen, as is often the case with these things, time will run out at the end of the month and nothing will be achieved and nothing will change.
"There is one more attempt in the Strategy meeting and the Commission meeting at the end of the month to discuss and table the concerns and where we're at, but failing that regulations will inevitably stay as they are."
