Christian Horner has defended Red Bull's chassis after Daniel Ricciardo said the team is lacking as much from the RB11 as it is from Renault's power unit. Ricciardo... read more »

Daniel Ricciardo was disappointed to qualify ninth, and felt Red Bull are struggling with a power deficit compared to their rivals. View the original post at Daniel Ricciardo:... read more »

Roberto Merhi has bemoaned his weight as a reason why Manor team-mate Will Stevens has managed to get the upper hand in their personal Formula 1 duel to date read more »

Jenson Button has urged caution ahead of the Canadian Grand Prix as it's a circuit which will highlight McLaren's weaknesses and he is therefore expecting the team to... read more »

Honda have accused Spain's Marca of false reporting after supposed comments from engineer Ryo Mukomoto claimed their power unit won't be capable of race wins until... read more »

Maurizio Arrivabene insists the updated Ferrari SF15-T is faster, d despite appearing to lose ground on Mercedes at the Spanish Grand Prix. read more »

Spanish Grand Prix winner Nico Rosberg was surprised by the advantage Mercedes enjoyed over its Formula 1 rival Ferrari this weekend read more »

Sebastian Vettel says he is sure Ferrari has made progress at the Spanish Grand Prix, despite the squad slipping to its biggest deficit to Mercedes in 2015. Vettel collected... read more »

Sebastian Vettel thinks Ferrari still has a large deficit to Mercedes but thinks the Spanish Grand Prix will give a true indication of the SF15-T's potential. It was... read more »

Red Bull aren't simply waiting for Renault to find extra performance from its hybrid-V6 power unit to help close the gap to leaders Ferrari and Mercedes. The team believe... read more »

Red Bull head of aerodynamics Dan Fallows believes his team can overcome the deficit it has to championship leaders Mercedes on the strength of the car's aero performance... read more »

Williams announce a loss of £42.5m in 2014, blaming the deficit on a "hangover" from the team's ninth-placed finish in 2013. read more »

Mercedes will not rush bringing in upgrades for its Formula 1 engine, despite the resurgent Ferrari having dramatically reduced its power deficit, says Niki Lauda read more »

McLaren believe they'll be capable of fighting for points with both cars at the next race in three weeks time according to racing director Eric Boullier. The Woking outfit... read more »

Nico Rosberg faces a 27 point deficit heading into the European leg of the 2015 Formula 1 World Championship season after finishing third in Bahrain read more »

Williams' relatively small budget compared to Ferrari's is beginning to show according to Felipe Massa. The Brazilian believes the Grove outfit's budget deficit... read more »

Renault refuses to change its strategy in the wake of a poor start to the F1 season, but insists its problems increase its desire succeed. read more »

McLaren may still be struggling with a power deficit from the Honda power unit but the aero team are pushing on with their development path.  A new diffuser design was... read more »

Jenson Button is confident McLaren will enjoy massive gains in lap time when they're able to run their Honda power unit at 100 per cent. At present Honda are having to... read more »

Red Bull motorsport consultant Helmut Marko admits that the squad has a big deficit compared to leaders Mercedes and concedes that the situation may not change… read more »

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 »