Renault has admitted its upgraded engine failed to deliver at the Brazilian GP - with the manufacturer to now work on ways to improve the unit's performance. read more »

A beleaguered Renault concedes its long awaited engine upgrade did not meet expectations on its debut race weekend in Brazil. read more »

Renault has admitted that its upgraded power unit did not deliver the anticipated step forward in performance at the Brazilian Grand Prix. Red Bull installed the updated unit... read more »

Although pleased with the reliability of their upgraded engine, Renault concedes that "it did not deliver the expected improvements in performance"... read more »

Renault has admitted that the upgraded engine it fitted to Daniel Ricciardo's Red Bull for the Brazilian Grand Prix weekend failed to live up to its initial… read more »

Daniel Ricciardo feels Renault need to go back to the drawing board again after the upgraded engine he is using in Brazil does not seem to be an improvement on its predecessor. read more »

Daniel Ricciardo says Renault needs to go "back to the drawing board" after being disappointed with its upgraded power unit, especially if Red Bull is to return to... read more »

Red Bull's Daniel Ricciardo says Renault's upgraded Formula 1 engine is not any better than the old spec, adding the French manufacturer needs to "go back to the... read more »

Daniel Ricciardo says it was not worth him using Renault's new power unit during the Brazilian Grand Prix, as he qualified in ninth position. Ricciardo fitted... read more »

Red Bull's Daniel Ricciardo has admitted Renault's upgraded engine - which is poised to form the basis for the unit the team will run in 2016 - "hasn't... read more »

Daniel Ricciardo believes the decision to use an upgraded Renault engine in qualifying at Interlagos was a futile exercise for Red Bull... read more »

Daniel Ricciardo had his first opportunity to run the upgraded Renault engine on Friday in Brazil, and finished inside the top five in both free practice sessions. read more »

World Champion Lewis Hamilton set the quickest time for Mercedes during the first practice session for the Brazilian Grand Prix at Interlagos. Hamilton traded fastest laps with... read more »

Daniel Ricciardo says Red Bull hope to gain some “clarity” on the direction they will take in 2016 when Renault introduces its upgraded engine at the Brazilian GP. read more »

Daniel Ricciardo believes the arrival of an upgraded Renault engine for his Red Bull at the Brazilian Grand Prix will provide "clarity" on the team's way forward... read more »

Daniel Ricciardo will run Renault's upgraded engine at the Brazilian Grand Prix, which will result in a grid penalty for the Australian... read more »

Red Bull has confirmed that Daniel Ricciardo will trial Renault's upgraded power unit during this weekend's Brazilian Grand Prix, leaving the Australian to… read more »

Daniel Ricciardo will run Renault's upgraded engine at the Brazilian Grand Prix, which will result in a grid penalty for the Australian. The French manufacturer confirmed... read more »

Daniel Ricciardo will drop ten-places on the grid in Brazil after Red Bull decided to use the upgraded Renault power unit on his car for the first time. read more »

Daniel Ricciardo will take a 10-place grid penalty for this weekend's Brazilian GP as Red Bull has decided to fit Renault's upgraded Formula 1 power unit, Autosport... read more »

Red Bull is to debut the upgraded Renault power unit at next weekend's Brazilian Grand Prix. read more »

Jenson Button refuses to be too disheartened by his limited track time in Mexico so far, saying the upgraded Honda power unit at least seems quicker read more »

Jenson Button may have to wait for Honda's upgraded engine for at least another race as the manufacturer investigates Fernando Alonso's engine problems from Austin.... read more »

Fernando Alonso cursed a late loss of power on his upgraded Honda power unit which saw him finish without a point at the U.S Grand Prix despite what he called "one of the... read more »

Red Bull Team Principal Christian Horner says that Renault's upgraded power unit will not be trialled until next month's Brazilian Grand Prix. Renault… read more »