Rob Smedley believes Red Bull has produced a "hugely impressive" car this season and that it will quickly challenge Mercedes if Renault can deliver more power read more »

Christian Horner believes Sebastian Vettel's performance in Spain shows the world champion is getting his 2013 confidence back after a challenging start to the current season read more »

Red Bull team principal Christian Horner believes Sebastian Vettel s drive in the Spanish Grand Prix shows he has got his mojo back read more »

Pastor Maldonado believes Lotus has made a big step forward in performance thanks to a strong two days of testing in Spain read more »

Toto Wolff believes it is up to Mercedes to ensure fans are entertained, even if the only competition in 2014 is between Lewis Hamilton and Nico Rosberg... read more »

Jean Todt believes the clamour over the noise levels will soon be something of the past, after Mercedes trialed the 'trumpet' tailpipe in Barcelona... read more »

Eric Boullier believes that McLaren will know by July's British GP how their chances of a 2014 recovery are likely to pan out - and has indicated that if a breakthrough... read more »

Felipe Massa believes Williams has already resolved the issues he had in the Spanish Grand Prix after a day of testing in Barcelona read more »

Max Chilton believes Marussia made 'a really big step' on Tuesday during the post-Spanish Grand Prix test, and after he went quickest late on few could disagree. read more »

Power unit supplier Renault believes that their recovery with their engine is 90% complete. Renault endured a miserable start to 2014 when issues blighted their pre-season... read more »

Toto Wolff believes Nico Rosberg can deal with the pressure of losing the championship lead and won t be fazed by Lewis Hamilton s winning run read more »

Renault believes it was "90% of the way" to a complete recovery in Spain and expects a significant improvement in time for the Monaco Grand Prix read more »

As Red Bull continue to recover, Daniel Ricciardo believes it's only time before Sebastin Vettel gets back "his World Champion form"... read more »

Jenson Button believes that small improvements have the potential to make a big difference as McLaren bids to arrest their declining fortunes after a third successive race... read more »

Sebastian Vettel believes Mercedes can be caught this season after Red Bull's improved display at the Spanish Grand Prix. read more »

Jenson Button believes a slice of misfortune during his second pit stop ultimately cost him the chance of marking the improvements made by McLaren with a points finish read more »

Max Chilton believes that Sauber is now within Marussia's sights following the Spanish Grand Prix. Chilton finished the race in 19th place, a few positions behind Sauber... read more »

Jenson Button believes his race was ruined when McLaren decided to haul him into the pits ahead of his scheduled stop, during Sunday's Spanish GP... read more »

Valtteri Bottas believes that he and Williams achieved the maximum result possible during the Spanish Grand Prix. Bottas started the race from fourth on the grid but jumped up... read more »

If the Spanish GP had been just one lap longer, Nico Rosberg believes he would have been the one on the top step of the podium... read more »

Nico Rosberg believes he needed just one more lap to overtake Mercedes Formula 1 team-mate Lewis Hamilton for Spanish Grand Prix victory read more »

Romain Grosjean believes the long runs Lotus carried out on Friday is an indication he could be in for his best finish of the season after qualifying fifth in Spain. read more »

Fernando Alonso believes Ferrari is part of "quite a fight" for third place in tomorrow's Spanish Grand Prix despite qualifying in seventh read more »

Nico Rosberg hasn't given up hope of adding to his F1 world championship lead, despite failing to claim pole position for the Spanish Grand Prix. read more »

Fernando Alonso believes Ferrari has a lot of work to do in order to maximise its potential in Spain after struggling with downforce and tyres during Friday practice read more »