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

Yasuhiso Arai believes Honda will fix their reliability issues before the next test at Barcelona with new parts that are a "step up"... 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 »

Formula 1 returned to action this week at Jerez in southern Spain, with eight teams putting the first miles on their 2015 machines. Here's how each team fared across the... 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 »

McLaren are adamant that as long as they can get on top of their reliability issues, their Honda-powered car will have the performance needed... read more »

Honda will introduce a host of upgrades to its latest Formula 1 engine for the next test at Barcelona to solve the reliability problems that it suffered at Jerez this week read more »

Whilst Ferrari team boss Maurizio Arrivabene is encouraged by his team's Jerez performance, he is certain that a number of rivals are sandbagging. Sebastian Vettel topped... 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 »

Kimi Raikkonen pronounces himself happy with the progress, speed and reliability of the SF15-T, but continues to play down the Ferrari's session topping times read more »

Lewis Hamilton put another 100+ laps on the new Mercedes W06 Hybrid as their title defence got off to a strong start at Jerez. 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 »

Nico Rosberg again exceeded 150 laps of Jerez as Mercedes continued to work on reliability at the opening pre-season F1 test. read more »

Sebastian Vettel has played down his time-topping laps on both the first and second day of testing in Jerez, claiming Mercedes are still favourite. The German says Mercedes... read more »

McLaren are confident they will enjoy a better day of testing on Tuesday after making a reliability breakthrough on Monday evening. The team completed just six laps on the... read more »

Jenson Button insists there is no alarm at McLaren's troubled start to Formula 1 testing with Honda, claiming it made a late breakthrough with its reliability dramas on Monday read more »

Sebastian Vettel finished his week’s driving as the fastest driver for the second successive day at the first pre-season test in Jerez as Mercedes hit reliability problems. read more »

Eric Boullier is confident the problem that stopped the McLaren-Honda from completing more than six laps on the first day of testing can be resolved by day two on Monday, but... read more »

Nico Rosberg heaped praise on his Mercedes team after he racked up 157 laps on the first day of testing at Jerez. Rosberg, who finished runner-up in last year's... 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 »

Renault has released new images of its 2015 power unit which will be supplied to both Red Bull and Toro Rosso this season. The French manufacturer struggled throughout 2014 and... read more »

Lotus F1 technical director Nick Chester is hopeful switching to Mercedes Power Unit will bring vast improvements in performance and reliability in 2015 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 »