Williams driver Felipe Massa says the squad has made a step forward with its new car, having tested the FW37 for the first time at Jerez on Tuesday. read more »

Felipe Massa says Williams is paying little attention to its engine at this stage of winter testing and thinks big gains have been made on the aerodynamic side with the FW37 read more »

Valtteri Bottas says what appeared to be a solid but unspectacular day of testing was another valuable one for Williams as he continued to see the potential of the FW37 read more »

Valtteri Bottas says the FW37 is already a step up from last year's Williams after he overcame a slow start to record an encouraging start to 2015 winter testing read more »

Valtteri Bottas reported a positive start to Williams pre-season F1 testing programme after putting 72 laps on the new FW37 at Jerez. read more »

Valtteri Bottas is already convinced that the 2015 Williams Formula 1 car is a step forward from last year's FW36 after the first day of testing at Jerez read more »

Valtteri Bottas was pleased with Williams' progress on the opening day at Jerez after initially making a slow start... read more »

With Williams Martini Racing revealing their FW37 at Jerez, both Valtteri Bottas and Felipe Massa were enthusiastic about their chances of another good season for ... read more »

After showing digital images of its FW37 last week, the Williams Martini Racing team have revealed the actual car at Jerez ahead of its pre-season ... read more »

Undoubtedly the most improved team in 2014, Felipe Massa is hoping Williams can take another step forward in their fight back this season... read more »

Williams Martini Racing has publicly revealed its 2015 F1 challenger, the FW37 Mercedes, ahead of F1 pre-season testing in Jerez. read more »

The Williams F1 Team have officially presented their 2015 Formula One car to the public. Racing drivers Felipe Massa and Valtteri Bottas joined up to take the covers off of... read more »

Williams has officially unveiled the FW37 in the pit lane on the morning of the first Jerez test read more »

Williams has officially unveiled its Mercedes-powered FW37 in the pit lane at Jerez. read more »

Just minutes before the first pre-season test got underway at Jerez, Valtteri Bottas and Felipe Massa took the covers off the new FW37... read more »

The Williams Formula 1 team officially unveiled its 2015 FW37 at Jerez ahead of the first day of pre-season testing read more »

Williams has unveiled its new Mercedes-powered FW37 in the pit lane at Jerez, ahead of the first day of testing getting underway. The squad released images of its car last week... read more »

Valtteri Bottas will kick off Williams' pre-season with the team confirming that he will debut the new FW37... read more »

British racing driver Alex Lynn will be joining Williams Martini Racing as Development Driver for the 2015 Formula One World Championship season. Lynn will mainly use the... read more »

GP3 champion Alex Lynn has joined Williams as the squad's new development driver. Lynn, 21, romped to last year's GP3 crown and will now primarily undertake duties in... read more »

Valtteri Bottas will debut the Williams FW37 at the first winter test of 2015 in Jerez read more »

Valtteri Bottas has been handed the first drive of the new Williams F1 car, FW37, at the first F1 test of the season, with team-mate Felipe Massa in the car for days three and four read more »

Williams has confirmed that Valtteri Bottas will give the new Mercedes-powered FW37 its public debut on the first day of pre-season testing at Jerez on Sunday. read more »

Video: 3D animation of Williams FW37 read more »

Williams's release of computer renderings of its 2015 Formula 1 car, the FW37, provided a first chance to see a nose designed to the new regulations read more »