Esteban Gutierrez says problems with the Sauber brake-by-wire system is preventing the drivers from further improving the car's... read more »

Kamui Kobayashi has given a damning verdict on Caterham's chances at the season opener in Australia, claiming it might be better to take a GP2 car. The team struggled to... read more »

Lotus believe their nose design, dubbed the 'twin-tusk thanks to its appearance, is providing a performance advantage over the lower noses adopted by rival teams. There... read more »

Williams has confirmed that Susie Wolff will continue as the team's development driver throughout 2014, which will include taking part in two FP1 sessions. It's... read more »

Q. What were the key steps taken between Jerez and Bahrain? Rob White: We made a number of specification changes to the Energy Store (battery), involving modified hardware,... read more »

Whilst Renault's power unit enjoyed its best day yet, having completed just over 200 laps in the back of its customers cars, Kamui Kobayashi says it's unable to... read more »

Nico Rosberg says Mercedes has surprised even itself at how reliably it has been able to run so far in testing, but admits the focus is now on... read more »

Kamui Kobayashi says it was "good" to unlock some of his Caterham's performance even if his P6 time doesn't count for much... read more »

Caterham is not running "anywhere near full performance levels" yet in testing but can be happy with its reliability, according to Robin... read more »

Mercedes have yet to dial their new power unit up to maximum revs according to Lewis Hamilton, who admitted the team had some performance in hand. The Briton went third... read more »

Lewis Hamilton says Mercedes will start working on the pace of its car this week in Bahrain and says it hasn't used the full performance of the new power unit... read more »

Marussia are hoping to make a big enough step forward this year that they'll be a regular feature in the second qualifying phase - something they only achieved twice in... read more »

The resumption of pre-season F1 testing will focus on Renault's battle for both performance and reliability after a frustrating debut for its new V6 at... read more »

Felipe Massa is hopeful that Williams will have an impressive season after the Wantage team produced a solid performance at last month's Jerez test... read more »

Ferrari's technical director James Allison says he expects the current cars to be much quicker at the opening race in Australia than people fear they will. Whilst Jenson... read more »

Ferrari technical director James Allison is expecting a rapid increase in the performance of the current Formula 1 cars before the start of the season. read more »

Mercedes chairman Toto Wolff has warned McLaren that it can expect a different relationship once the season starts in Australia. The Woking outfit will switch to Honda power... read more »

Caterham team owner Tony Fernandes has admitted that Heikki Kovalainen's performance at Lotus, when he stood in for Kimi Raikkonen at the final two races of the 2013... read more »

Toto Wolff says Mercedes can be 'cautiously satisfied' with the performance of its 2014 car so far     read more »

Cooling is going to be one of the biggest challenges for the teams in 2014 with the new power units requiring different characteristics to its predecessor. The teams will of... read more »

Adrian Sutil says Sauber needs to focus on its own aerodynamic performance at the Bahrain test after being pleased with the Ferrari power unit in... read more »

Sauber are hoping to focus on adding performance to the C33 in Bahrain, after a successful opening pre-season test in Jerez. The Swiss team focused on reliability and systems... read more »

Despite Merc downplaying their Jerez performance, the W05 has caught the eye of their rivals with Adrian Sutil saying it "looks quite strong"... read more »

Monisha Kaltenborn says Sauber was encouraged by its early performance in Jerez but has a major aerodynamic update to introduce at the next... read more »

Ferrari have been boosting by the on-track performance of the F14 T at Jerez correlating with forecasts from its wind tunnel. read more »