
Renault is steeling itself for a difficult 2016 following its late decision to return as a team owner.
The French car company last week finalised its takeover of Lotus, who finished sixth of 10 teams this year.
Renault Sport boss Cyril Abiteboul said the team's situation meant "there is no way you can expect fantastic results".
"We've a clear plan, not only for next year but for years to come. Next year will not only be a success if we're doing well on the track," he added.
Abiteboul said 2016 would mainly be about building up the organisation and resolving the problems with Renault Sport's engine department, which has lagged behind standard-setters Mercedes since turbo hybrid engines were introduced to F1 in 2014.
Renault will also have to work on integrating its dual bases in Enstone in Oxfordshire, where the chassis is built, and the engine base in Viry-Chatillon near Paris.