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 »

Ron Dennis admits he is impressed by the performance of the new Honda engine, but concedes reliability will be their biggest challenge... read more »

McLaren aren't concerned by the performance of Honda's new hybrid-V6 engine, but they are about the reliability of the unit which is currently an unknown. Chairman... read more »

Ron Dennis has hinted that the Honda engine that will power McLaren next season already has impressive performance and that the main concern will be making it reliable in the... read more »

McLaren might have only completed three laps during their first public test day with the new McLaren-Honda MP4-29H/1X1, but racing director Eric Boullier is already targeting... read more »

Mercedes boss Toto Wolff feels his team let Nico Rosberg down to some extent after a reliability issue hindered his chances of taking the title fight to Lewis Hamilton in Abu Dhabi read more »

Nico Rosberg has called team-mate Lewis Hamilton a "deserving champion" despite reliability troubles effectively deciding the title battle in Abu Dhabi. "All in... read more »

Lewis Hamilton has secured his second Formula One World Championship title following victory at today's Abu Dhabi Grand Prix. Hamilton never came under any threat after... read more »

Lewis Hamilton won his second world championship with victory in the Abu Dhabi Grand Prix as reliability problems hit team-mate Nico Rosberg read more »

Mercedes' Toto Wolff insists both Lewis Hamilton and Nico Rosberg will have another shot at winning the title in the years to come, so if they lose out next week, they... read more »