Looks like the F1 drivers who will compete this year, will have more problems on save their engines. The FIA has approved to only use 4 engines for a driver in the whole season.
As some British media say and as FORMULARAPIDA.NET knows, the FIA has announce that the drivers will only use 4 engines in this 2015 FIA Formula 1 season. That means, 20 races with only 4 engines, 5 races for every engine.
If the drivers and the teams had a lot of problems to compete with only 5 engines in 2014, this 2015 with another regulations it will be much more difficult. If some driver want to use the 5th engine power unit, he’ll be penalize by 10 places in the grid.