Renault's 2016 Formula 1 car, the RS16, made its first proper appearance in the Barcelona pitlane ahead of the start of pre-season testing on Monday morning.
The team had held its official launch in Paris nearly three weeks ago, but used a 2015-based show car for that event.
The definitive 2016 design was revealed ahead of Jolyon Palmer taking driving duties for the first two days of running.
His team-mate Kevin Magnussen - a late replacement for Pastor Maldonado - will then try the car on Wednesday and Thursday.
Renault has reacquired what was formerly the Lotus team, which it previously operated as its own works squad from 2000 to '09.
Team chiefs have urged caution ahead of the 2016 season, arguing it will be two or three years before Renault's new project is competitive enough for consistent podiums.
The RS16 is running in a temporary livery for testing, before its definitive 2016 colours are unveiled prior to the season-opening Australian Grand Prix.