Renault insists their "performance level is where they expected" despite several reliability problems in the first test in Jerez... read more »

Renault says that they understand the problems which primarily affected Red Bull during the first pre-season test at Jerez last week and have not suffered from any setbacks. read more »

Renault are far more confident of a successful 2015 season following a successful Jerez test in which the engine manufacturer hit "almost all the objectives" they set... read more »

Renault says it will focus more on race performance at the next F1 test in Barcelona read more »

Renault says fixes for its Jerez reliability worries having been put in place - which means that the next Formula 1 test in Barcelona will show off its true potential. read more »

Renault was reassured by its performance at the opening test of 2015 in Jerez, despite numerous issues delaying Red Bull's progress read more »

Jerez witnessed the track debut for the upgraded Renault power unit that will power Red Bull and Toro Rosso in 2015. read more »

Daniil Kvyat has faith that Red Bull engine partner Renault can make the step needed for the next Formula 1 test at Barcelona after frustrations at Jerez this week read more »

Daniil Kvyat is relaxed that Renault has a hold off the problems that hampered Red Bull's mileage during the first F1 pre-season test in Jerez. read more »

The first pre-season test is now over and Ferrari have emerged as a potential title challenger with Kimi Raikkonen topping the combined times, whilst Ferrari power locked out... read more »

As Red Bull suffer with reliability issues, Carlos Sainz racks up a substantial 136 laps on his second day in the Scuderia Toro Rosso. read more »

Renault has revealed that its Formula 1 testing efforts at Jerez have been hurt by reliability worries over what it calls a "stupid part" on its engine read more »

Red Bull Racing's Daniel Ricciardo says there is still much to be positive with despite a Renault F1 power unit issue limiting him to 46 laps. read more »

Daniel Ricciardo insists he expected Red Bull's first 2015 Formula 1 test to be compromised, after a Renault engine change disrupted his running at Jerez on Tuesday. read more »

Daniel Ricciardo says he has no concerns about Renault's readiness for the new season despite seeing Red Bull's third day of testing cut short by a power unit change read more »

The third day of pre-season testing in Jerez saw Sauber's Felipe Nasr at the top of the timesheets, while McLaren made limited progress with its new Honda-powered MP4-30... read more »

Red Bull has revealed its new Renault-powered RB11 in a 'testing livery' at Jerez. read more »

Despite being confident that Renault have closed the gap to Mercedes, Adrian Newey has warned that a title tilt may be a step too far for Red Bull Racing... read more »

Toro Rosso has taken encouragement from the work engine-supplier Renault has achieved over the winter and believes it will be stronger than last year read more »

Renault's Formula 1 teams have faith that the French car manufacturer is well set to escape the testing nightmares that it suffered 12 months ago read more »

Toro Rosso's all new driver line-up of Max Verstappen and Carlos Sainz have unveiled the team's 2015 car in the pit lane in Jerez. Verstappen and Sainz took the wraps... read more »

Rookie drivers Max Verstappen and Carlos Sainz Jr. have taken the wraps off of Toro Rosso's new Renault-powered STR10 in the Jerez pit lane, ahead of the first day of... read more »

Although drivers will only be able to use four power units in F1 2015, Renault is optmistic that it has conquered the reliability woes that plagued it last year. read more »

Red Bull design guru Adrian Newey has set low expectations for the 2015 season, all but ruling out a title challenge, despite having yet to see how their car performs on... read more »

Adrian Newey thinks it too early to expect Renault to have made the progress needed to enable Red Bull to challenge for the Formula 1 world championship this year read more »