The FIA has announced that a similar level of in-season engine development would be allowed in 2016 through the current system of 'tokens', which had been due to go down to 25 but would remain at 32.
The allowance will then drop to 25 in 2017 and 20 in 2018. The decision will help McLaren's partners Honda who returned to the sport this year but struggled with poor performance and a lack of reliability.
The World Motor Sport Council also approved, with just one vote against, a mandate for the FIA president Jean Todt and the commercial rights holder Bernie Ecclestone to make recommendations and decisions "regarding a number of pressing issues".
They included governance of the sport, power units and reducing costs.
"Mr Todt and Mr Ecclestone expressed their intention to establish conclusions on these matters by 31 January, 2016," the statement said.