Scuderia Toro Rosso became the latest F1 team to unveil its 2014 contender, with Jean-Eric Vergne and Daniil Kvyat drawing back the covers on the SRT9 in the pit lane at Jerez the day before the start of official pre-season testing.

Team principal Franz Tost commented that the upcoming season represents a "very interesting challenge" for all the F1 teams, thanks to the biggest overhaul of technical regulations seen in the last few decades.

"Here at Scuderia Toro Rosso we regard the coming months and 19 Grands Prix not only as a challenge but also as a fantastic opportunity to step up in the team hierarchy," Tost said.

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"The new rules have required a completely new design philosophy, starting with a clean sheet of paper," he continued.

"Having invested in new staff and facilities over the past few years, we have been able to tackle the task of designing and building the STR9 with a group of engineers and designers that have been working on the project since Day 1, under the leadership of [technical director] James Key.

"That stability has been of great benefit, while in other areas we hope that changes we have introduced will also bring a step up in performance."

On top of the new engine configuration with the move to a 1.6 litre turbocharged V6 coupled to two energy recovery systems, Toro Rosso have also taken this opportunity to change engine suppliers, and from 2014 will be powered by Renault like the main Red Bull Racing team.

"The French company's credentials are impeccable, having won the World Championship titles for the past four years and we have already established an excellent working relationship with its engineers," said Tost.

"Joining forces with Renault also means that, within the framework of the Sporting Regulations, we can once again enjoy synergies on the technical front with our colleagues at Red Bull Technology."

Tost also welcomed new driver Daniil Kvyat to the line-up, where he takes over from Daniel Ricciardo who has now graduated to the Red Bull. Tost described the GP3 champion as "clearly very talented" and said that he didn't expect that it would be would be very long until the rookie was pushing new team mate Jean-Eric Vergne to new heights.

"The fans just want to see exciting racing and hopefully that is what they will get in 2014," assured Tost. "As for what role Scuderia Toro Rosso will play, it's too early to tell and even harder than usual to make any predictions. What I can say is that we must do better than in 2013 and move up the order.

"Continuity is a key factor when it comes to making progress," Tost pointed out. "That applies to revenue streams as much as it does to the technical side of the organisation.

"Therefore I am pleased to say that sharing that opportunity with us will be our long-term partners and sponsors, Red Bull, Cepsa and Nova Chemicals. In addition, I'm delighted to welcome on board a new sponsor, the investment group Sapinda. We at Toro Rosso thank them all for their support and the trust they have shown in us."