Toro Rosso technical director James Key admits the team's new car has been compromised by the late confirmation of its power unit supply.

With Red Bull's relationship with Renault breaking down in 2015, there was uncertainty over the future of both teams due to numerous quit threats from owner Dietrich Mateschitz. Having moved to terminate its agreement with Renault, Red Bull was unable to secure an alternative engine supply and will now  run Tag-Heuer branded Renault power units in 2016.

Toro Rosso was able to reach an agreement with Ferrari for year-old engines, but Key says the uncertainty delayed its technical plans.

"Yes and no, because when you've got a tricky engine situation it's always a compromise," Key told Sky Sports when asked if the new car had been compromised.

"There is a compromise because you've really got to be optimising your car around what is an incredibly complicated installation of these power units. Back in March is when you're really getting to grips with what you're trying to do.

"So it does compromise from a technical viewpoint. In terms of what the team is doing, I don't think it makes the slightest bit of difference. You simply shuffle plans around accordingly."

And while Key is confident Toro Rosso will be able to respond with a strong car, he admits the late confirmation "is a massive distraction" for the team.

"We've got various stages of planning, there are some really good guys to work on all this stuff, so we've got a lot of very competent production guys and designers who are working hard to make sure that we're in the best shape possible.

"You'd never want it because it is a massive distraction and it does compromise your car, but it's surprising what you can do when you're faced with uncertainty."

Eric Silbermann: A winter's tailwind

Five things to look forward in F1 in 2016

Key dates for the 2016 F1 season

Use the red tabs on either side of the screen to scroll through more Formula One news and features

Technical feature: All of the 2015 F1 steering wheels

Best of ... Scene at

Keep up to date with all the F1 news via Facebook and Twitter

Andrew Lewin

Andrew first became a fan of Formula 1 during the time when Michael Schumacher and Damon Hill were stepping into the limelight after the era of Alain Prost, Nigel Mansell and Aryton Senna. He's been addicted ever since, and has been writing about the sport now for nearly a quarter of a century for a number of online news sites. He's also written professionally about GP2 (now Formula 2), GP3, IndyCar, World Rally Championship, MotoGP and NASCAR. In his other professional life, Andrew is a freelance writer, social media consultant, web developer/programmer, and digital specialist in the fields of accessibility, usability, IA, online communities and public sector procurement. He worked for many years in magazine production at Bauer Media, and for over a decade he was part of the digital media team at the UK government's communications department. Born and raised in Essex, Andrew currently lives and works in south-west London.

Recent Posts

Horner: Max 'answered critics' with epic Sao Paulo GP drive

Red Bull team principal Christian Horner hailed Max Verstappen’s sensational Sao Paulo Grand Prix victory…

1 min ago

Sainz left puzzled by double crash drama in rainy São Paulo

Carlos Sainz was left scratching his head after a disastrous Sunday at the Sao Paulo…

1 hour ago

Alonso pushed through agonizing pain to complete Sao Paulo GP

Fernando Alonso braved both physical agony and mechanical challenges in the Sao Paulo Grand Prix,…

3 hours ago

Alpine double-podium in Brazil could deliver $30 million windfall

Alpine’s remarkable double podium at the São Paulo Grand Prix with Esteban Ocon and Pierre…

17 hours ago

F1i's Driver Ratings for the 2024 São Paulo GP

Alexander Albon, Williams (Did Not Start): 5.5/10 Alex Albon is definitely going through something of…

19 hours ago

Jos Verstappen rips British media after Brazilian Max fest

Jos Verstappen wasted no time after his son spectacular win at the São Paulo Grand…

20 hours ago