Renault to start 2018 F1 season in compromised spec for reliability
The focus for all its teams will be on ensuring reliability for its Melbourne-spec, before performance upgrades come with the second and third engines on each car.
"We have decided voluntarily to make some compromises for engine number one in order to make sure that we have got the right platform," Renault F1 managing director Cyril Abiteboul told Autosport.
"If you come to the first race and you start to have reliability problems, then that is not just that race - it compromises the whole season. You cannot afford to do that.
"It is about setting the right baseline, having the right platform and building a plan for the season - trying in particular to synchronise development at the factory with the introduction of new engines because we are very limited.
"The fewer engines you have the more rigid you need to be in the implementation of performance. So the focus is very much on reliability."