Williams' Rob Smedley admits the deficit to Ferrari is a concern following last weekend s 2015 F1 Malaysian Grand Prix read more »

Red Bull's Helmut Marko has admitted that the team's RB11 chassis is equally to blame for their performance woes, alongside its engine partner, Renault. Marko... read more »

Valtteri Bottas says the Williams Formula 1 team is missing "quite a big amount" of race pace as it fights to remain one of the sport's frontrunners read more »

Renault Sport F1 boss Cyril Abiteboul has hit back at comments from Red Bull's Adrian Newey, accusing the design guru of lying about the Renault power unit. The Briton... read more »

Renault launches a defence of its power units after discovering the performance shortfalls were down to engine and chassis issues read more »

Felipe Massa has suggested that Williams is not on a level playing field with Mercedes in terms of engines, which he believes is helping his former Ferrari… read more »

Daniel Ricciardo has admitted that Red Bull has a significant deficit to overcome if it is to close the gap to leaders Mercedes after a difficult Australian… read more »

Red Bull has threatened to quit Formula 1 if something isn't done to equalise engine performance as well as opening up the regulations to make them less restrictive and... read more »

Red Bull boss Christian Horner has called on the FIA to rein in Mercedes' advantage over the rest of the field after admitting Renault had a 100bhp deficit to the world... read more »

Nico Rosberg insists the F1 qualifying margin between himself and Australian GP polewinner Lewis Hamilton was down to errors on his fastest lap. read more »

Renault believes the changes to its power unit this year should put Red Bull in a position to race for victories at the end of the season after it achieved its pre-season... read more »

Renault’s Remi Taffin believes that they have halved their engine efficiency deficit to Mercedes, but isn’t predicting any race wins until late in 2015. read more »

Sebastian Vettel plays down the time deficit to Mercedes on the second day of F1 testing, suggesting Ferrari will only now work on its ultimate pace read more »

Renault Sport admits they still have ground to make up to Mercedes in terms of their power unit, but they are confident they will reach their target... read more »

Cyril Abiteboul says Renault is on course to halve the PU deficit to Mercedes in time for the opening round as it enjoys a reliable test in Spain. read more »

Renault are on track to half its performance deficit to rival engine manufacturer Mercedes, according to Renault Sport F1 managing director Cyril Abiteboul. The supplier to Red... read more »

Adrian Newey admits it will be difficult to close a “10 per cent” engine deficit to Mercedes from last year, no matter how good the Red Bull RB11’s chassis is. 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 »

Renault says it is aiming for a minimum of five wins in 2014 - two more than last year - and thinks it will have halved the deficit to Mercedes by the opener in Australia read more »

Renault are aiming to secure "at least five wins" during the 2015 season as it looks to close the performance gap to rival Mercedes. The French manufacturer admits it... read more »

Renault Managing Director Cyril Abiteboul expects the French manufacturer to halve its engine deficit to pacesetters Mercedes this season, and believes that it should be... read more »

Formula 1's new nose regulations gave Williams a 'headache' according to chief technical officer Pat Symonds. The FIA has tightened the rules around the nose... read more »

Christian Horner admits he was shocked by Renault's deficit to Mercedes in terms of performance throughout last year's Championship... read more »

Red Bull team principal Christian Horner has congratulated rival outfit Mercedes on the job they did in 2014 after the outfit secured both the Drivers' and... read more »

Christian Horner's demands for a new engine in 2016 are selfish, according to Mercedes technical boss Paddy Lowe, who claims the Red Bull boss is only making such demands... read more »