Toro Rosso: New STR14 car features many Red Bull parts for 2019 season
Toro Rosso have unveiled their 2019 Formula 1 car, saying it owes a lot to last year's Red Bull.
Red Bull's junior team are this year taking advantage of new rules allowing teams to buy parts from rivals.
US-based Haas have led on this approach since 2016 and Toro Rosso see it as a way to better use resources.
The team have a new driver line-up with the return of Russian Daniil Kvyat and a debut for UK-born Thai Alexander Albon.
Team boss Franz Tost said he did not want to set any targets for Toro Rosso but Honda's F1 technical director Toyoharu Tanabe said Red Bull's engine partner was aiming to "achieve better results than in 2018 for both teams".
Toro Rosso finished ninth in the constructors' championship last year and achieved a best result of fourth place in the Bahrain Grand Prix thanks to Pierre Gasly.
Tost said the new Toro Rosso, called the STR14, features a lot of parts bought from Red Bull that were on the car which finished third in the constructors' championship and took four wins.
F1 rules require only that teams design and build their own chassis and major aerodynamic surfaces. All other parts - such as suspension and gearbox - can be bought from another team.
Tost said the new arrangement - which Toro Rosso last used in 2008, when it effectively had an entire car from Red Bull before that practice was banned - would "leave more time for our technical working groups to focus more on the details".
Toro Rosso are one of the smaller teams on the grid in terms of staff numbers and budget.
The new car features the wider front and rear wings that have been mandated this season by F1's rule-makers in an attempt to make the racing closer by allowing cars to follow each other more easily.
Kvyat returns to F1 a little over a year after being dropped by Red Bull towards the end of the 2017 season following a series of poor performances.
The Russian had initially been promoted from Toro Rosso to Red Bull for 2014 but was demoted back again after four races in 2016 in a swap with Max Verstappen before being dropped altogether 18 months later.
Tost said: "Daniil showed his natural speed from the very beginning. When the contingency required his move to Red Bull Racing, it seemed he could be ready for the challenge.
"He showed some very good performances but to perform under pressure is always a challenge, now we can say with hindsight it was just too early.
"He had to live through a difficult time when he joined us again in 2016 - it was psychologically tough, but no one has ever doubted his driving skills. I strongly believe he deserves another chance in Formula 1."
Kvyat, who spent a season as a Ferrari development driver last year, said: "Let's just say it's great to be back and it proves you should never give up hope.
"I don't want to say whether I've changed or not. I know there's been a lot of speculation about this and whether I've matured or not and so on, but I prefer to let my driving on the track answer. I just want to get in the car and see what happens."
Albon, who finished third in the Formula 2 feeder series last year, said: "I'll try not to put too much pressure on myself and give it everything I have from day one. It's my opportunity this year to show everyone what I've got."
Albon is the first Thai driver in F1 since Prince Birabongse Bhanudej, who raced in the 1950s.
Albon, who was born in London, said: "It's a big deal for me to be a Thai driver. It's been a long time since there's been a Thai in Formula 1 and I'm just hoping to do everyone proud."
He added: "I never set any goals on anything. Every year, it was just each race, take it step by step, focus and race in that session - whatever it would be, practice, qualifying, the race. Just take it as it is.
"If you start setting long-term goals, you just put unnecessary pressure on yourself. I'm just focused on myself and let's see how it all goes."