Toto Wolff conceded Mercedes must change their car design in order to return to the top of Formula One.

Mercedes endured a dismal 2022 season, with Lewis Hamilton suffering the first winless campaign of his F1 career.

Much of their struggles were put down to issues with the car, but Mercedes stuck with their unique "zero pod" design for the 2023 season, despite the success of Red Bull's "side pod" model.

Yet after a disappointing qualification session that saw George Russell place in sixth and Hamilton in seventh for Sunday's season-opening Bahrain Grand Prix, Wolff confirmed changes will have to be made.

He said: "I don't think this package is going to be competitive, eventually.

"We gave it our best go also over the [off-season] and now we just need to all regroup, sit down with the engineers who are totally not dogmatic about anything and decide what is the development direction we want to pursue in order to be competitive to win races.

"It's not only like last year that you're scoring podiums and eventually you get there.

"I'm sure we can win races this season but it's really the mid-and long-term that we need to look at which decisions you need to take."

Wolff believes Mercedes "gave it our best shot" but ultimately the team must accept their model has not worked.

"We hit our targets. That's why we gave it our best shot," he continued. "The moment comes and the stopwatch comes out and that showed us that it's simply not good enough.

"We haven't got enough downforce and we need to find solutions to fix that."

Two-time reigning world champion Max Verstappen claimed pole position in Saturday's qualification, with team-mate Sergio Perez completing a front-row lockout for Red Bull.

Ferrari duo Charles Leclerc and Carlos Sainz will start in third and fourth respectively, while Aston Martin's Fernando Alonso occupies fifth on the grid ahead of Russell and Hamilton.

After a close-season of significant change, the starting grid for the Bahrain Grand Prix has a familiar look with Max Verstappen starting the new campaign on pole ahead of Red Bull team-mate Sergio Perez.

Pre-season testing at Sakhir had suggested the reigning world champion and his team would maintain their superiority to start the 2023 campaign, and further evidence to back up that point was provided in Q3.

Ferrari topped the timesheets in the opening two qualifying sessions, but it was Verstappen who reassumed command in the top-10 shoot-out with a time of one minute and 29.708 seconds.

Ominously for the two Ferraris on the second row, Charles Leclerc in third and Carlos Sainz in fourth, Verstappen's lap came following some significant struggles with the balance of the car, issues Red Bull fixed in time for the Dutchman to set the pace and put himself in position to dominate on race day.

Verstappen told the post-qualifying press conference: "I'm particularly happy because my whole weekend up until qualifying was very difficult.

"I couldn't really find the comfortable balance I had in testing and I was just struggling a lot to just get the car together, really. I went into Q1 and everything already felt a bit better, but it was still not, let's say, perfect. So yeah, I'm very happy then in Q3 that we could put these laps in.

"I still think it's not perfect, but in a better direction. So, for sure, for the next race we will have to analyse a bit why from the test to the race weekend it's so different for us, and also for me driving wise.

"But nevertheless, we are sitting here with two cars. So coming off last year I think this is again a very strong start for us. So yeah, very happy with that.

"Luckily in qualifying that's probably the best balance I've had throughout the weekend so far."

Asked about the race, he added: "That should normally be our stronger point than the one-lap pace. So hopefully we can show that again tomorrow."

Verstappen, though, knows he can take little for granted, acknowledging the field is closer than it was last season.

In Q1, first-placed Sainz and Nyck De Vries in 19th were separated by just over a second and, in addition to looking over his shoulder at the Scuderia, Verstappen may also have to concern himself with the threat of Aston Martin, who saw Fernando Alonso qualify fifth in his debut for the team ahead of the two Mercedes.

"They are all very close to us," Verstappen said when asked about to name his closest challengers. "Of course, we have shown really good race pace but we still need to show that tomorrow, and a lot of things can happen also during a race, which sometimes is not in your control.

"So yeah, we just, of course, need to focus on ourselves and try to do the best we can. And hopefully no crazy things will happen."

But Leclerc did not express much hope of Ferrari overhauling Red Bull in the race.

"I think we are only happy if we win," said Leclerc. "But again, realistically, they seem to be very, very quick.

"So I think in those weekends where we are a little bit underneath, that's exactly those weekend that we need to maximise and, and try to get what we can in terms of points.

"So yeah, if a win is possible tomorrow, I will go for it. If not, we'll try and get the maximum points."

Mercedes boss Toto Wolff will do anything it takes to see Lewis Hamilton win his record-breaking eighth world title.

Wolff would go as far as pushing Hamilton "around the track" if it meant the 38-year-old clinching his eighth Formula One triumph.

That would see Hamilton surpass Michael Schumacher, with whom he shares the record of seven championships.

Hamilton and Mercedes endured a difficult campaign last year, however, as he suffered the first winless season of his F1 career.

Mercedes' 2023 season did not off to the greatest start on Saturday, with Hamilton qualifying seventh and his team-mate George Russell in sixth for Sunday's Bahrain Grand Prix.

But Wolff is sure they will have more success than in 2022, and he will go to extremes to ensure Hamilton gets his eighth title at some stage.

"We're going to get his eighth. He has, compared to [Aston Martin's Fernando] Alonso, another four years in him as a minimum so we just need to get it done," Wolff told Sky Sports.

"Even if I have to push him around the track to win the eighth I am going to do everything that is needed."

Hamilton himself was confident he could close the gap on pole-sitter Max Verstappen in Sunday's season opener, and Wolff echoed the sentiment even if he conceded it was an ultimately disappointing qualifying session.

He added: "The gap is not ridiculous considering we only ran one tyre at the end but it is not where we want to be. 

"We are continuing to develop the concept and thinking we could land it and fight for pole position and that wasn't the case today. 

"That is the gap and this is what we need to find, or more, to win. 

"We could have potentially overtaken Alonso [in fifth] with both cars but this is where we are. We are super critical with ourselves and what we need to achieve.

"We are looking at everything to get it right with the concept, should we have reacted earlier, all of that.

"Everybody in the engineering team thinks like that and we just need to get our act together."

It was a similar story for Russell, who said: "Our goal was to make sure we've got a car we can build upon and that there aren't any significant problems.

"We spent probably three-quarters of last year problem solving and now I feel we've got a car which is nice to drive.

"It generally feels like a good car, and now we can focus on adding downforce and performance which is what the team have done for so long. 

"There are definitely signs to be positive, but we've got a lot to improve."

Formula One world champion Max Verstappen surprised himself by claiming pole position in qualifying for the Bahrain Grand Prix.

Verstappen, on the hunt for a third straight world title, will start at the front of the grid in Sunday's season-opening race after recording a quickest lap of 1:29:708 on Saturday.

Red Bull team-mate Sergio Perez qualified in second to complete the front row, with the Ferraris of Charles Leclerc and Carlos Sainz behind them on the second row.

Seven-time world champion Lewis Hamilton had to settle for seventh behind Mercedes team-mate George Russell, with Fernando Alonso wedged in fifth.

Ferrari had topped the opening two qualifying sessions but with Verstappen coming good in Q3, they elected against heading out again, instead choosing to conserve their tyres.

"It has been a bit of a tough start to the weekend yesterday and today not really finding my rhythm, but luckily in qualifying we managed to put the best pieces together," Verstappen said.

"I am very happy to be on pole. For the whole team coming off last year and again having such a strong car with Checo up there as well. It is amazing and I am looking forward to tomorrow. 

"The changes slowed down the car a bit but we are still going faster, which is great to see. Throughout the year, you will see everyone increasing their performance again a lot and that is the beautiful thing about Formula One.

"I was actually positively surprised to be on pole after the struggles I had in practice. Normally our race car is better, so let's see."

Despite having plenty of work to do to compete for a podium finish, Hamilton was in a buoyant mood.

"We went in with a really open mind," he told Sky Sports. "I woke up thinking we were going to be a lot further behind, and so the fact we're even getting into Q3 was great.

"We made a step forward today and the car was feeling much more alive this morning, and all of a sudden we were in a different place to where we were the day before. But then we got to qualifying and for me the car just didn't feel alive, it felt kind of average.

"It's not an impossible mountain to climb, so that's a positive, and I know everyone back at the factory has been working so hard. We can definitely close the gap, we've just got really focus and push like never before."

Leclerc, meanwhile, was happy with Ferrari's strategy despite believing he had the chance to fight for pole.

"There wasn't any issue. I think we were in the fight for pole, which was a good surprise to be honest because I did not expect that after testing and after free practices that were a little bit difficult," Leclerc said.

"We managed to find that pace for the qualifying pace, which was great. However, we need to keep in our mind that on the race runs, we seemed to be a little bit on the back foot compared to Red Bull.

"I think that we're in a better place starting third with new tyres than starting first with older. I don't know if I would have been in pole or not but it would have been close."

PROVISIONAL CLASSIFICATION

1. Max Verstappen (Red Bull)
2. Sergio Perez (Red Bull)
3. Charles Leclerc (Ferrari)
4. Carlos Sainz (Ferrari)
5. Fernando Alonso (Aston Martin)
6. George Russell (Mercedes)
7. Lewis Hamilton (Mercedes)
8. Lance Stroll (Aston Martin)
9. Esteban Ocon (Alpine)
10. Nico Hulkenberg (Haas)

Fernando Alonso provided an unlikely threat to Max Verstappen and Red Bull in practice ahead of the season-opening Bahrain Grand Prix.

Verstappen and Red Bull will be expected to take the Formula One title again this year after dominating in 2022.

But Verstappen topped the charts in neither of the first two sessions of the week on Friday.

Team-mate Sergio Perez was fastest in FP1, yet Aston Martin's Alonso was in second, ahead of third-placed Verstappen.

In FP2, F1 great Alonso then went one better with the fastest time. Verstappen was again one place back, in second, with Perez third.

Red Bull could at least be encouraged by the lack of a credible challenge from their long-standing rivals.

Charles Leclerc was fifth and then fourth for Ferrari, and the two Mercedes cars were further back still.

Lewis Hamilton was made to work hard for a pair of top-10 finishes in 10th and eighth, while George Russell settled for 11th in FP1 before falling to 13th in FP2.

A new Formula One season is upon us and the 2023 campaign will be the longest in the history of the elite motorsport class.

The number of races is rising to 23, with Las Vegas joining the show, though drama will not be limited to the track.

Two seasons ago, the controversial conclusion to the campaign in Abu Dhabi was a dominant story, while last year saw Red Bull's budget cap breach and an Oscar Piastri fight between Alpine and McLaren, as well as frustrations with governing body the FIA, notably over the drivers' freedom of expression.

Get set for sporting theatre to unfold over the course of the season ahead, though the biggest talking point centres around whether anyone can dethrone Red Bull.

Red Bull gives you wins

Max Verstappen finished at the front in 15 of 22 races last season, setting a record for the most triumphs in a single campaign, and he has won over half of the events in the past two years (25 wins from 44 races).

While pre-season testing never offers a full indication of what lies ahead, Red Bull's strength was still evident and the consensus is that the defending champions will begin the campaign with an advantage over their rivals.

If that gap cannot be reduced, the biggest threat to a third consecutive crown for Verstappen may come from team-mate Carlos Perez. Should that happen, tempers may flare as they did in Sao Paulo in November when Verstappen refused a team order to allow the Mexican through.

One aspect that may provide hope to Red Bull's rivals is the punishment issued for the budget cap breach, which included a 10 per cent reduction in aerodynamic testing allowance for 12 months. While it came too late to have a major implication on the overall develop of this year's car, it could restrict the team's ability to fix any issues that arise.

Ferrari's fight to the front

A season that offered so much promise for Ferrari last term ultimately fell away through mistakes in race strategy and engine failures, the latter of which resulted in the team having to run in a low-power mode to avoid further woes.

Charles Leclerc certainly has the ability to go head to head with perennial rival Verstappen, who he has raced since his junior days, while Carlos Sainz got his long-awaited maiden F1 win at Silverstone last year.

The appointment of Fred Vasseur as team principal, replacing Mattia Binotto, hands the Scuderia an experienced head on the pit wall and may result in fewer questionable calls in race strategy.

Ferrari are confident they can mount a challenge this season and, even though Leclerc has conceded Red Bull may start with an advantage, he believes the Prancing Horse can respond.

"The target is still [to win the title]. Even if we are starting a bit of the back foot compared to them in terms of performance, I'm sure we can come back," Leclerc told Sky Sports.

Mercedes on a mission

Any hopes of a Mercedes revival in 2023 appear to have stalled already, with testing performances suggesting the team may have to look over their shoulders at those chasing from behind rather than competing at the top.

Mercedes' design continues to divide opinion, with a zero-pod approach being vastly different to their rivals and leading to questions about whether they have stuck to their guns out of pride rather than sporting merit.

With Lewis Hamilton behind the wheel, there is always a chance and the Briton will be determined to come back and add to his record 103 race wins having failed to secure a victory last season – the first campaign in his career when he has not registered a win.

The seven-time world champion was outperformed by team-mate George Russell last season, however. Russell secured a maiden race win in the penultimate race and offered consistency throughout the campaign.

Best of the rest

The biggest surprise of the testing weekend in Bahrain was the pace shown by Aston Martin who, with the addition of Fernando Alonso, have a driver who could mount a serious threat to the bigger guns on the grid.

Though a third world title for the Spaniard may be a stretch, regular podiums and dethroning one of the big three in the constructors' championship is certainly an achievable goal.

At Alpine, great care will be taken to ensure French compatriots Pierre Gasly and Esteban Ocon do not find themselves butting heads, with a frosty relationship over the years, while McLaren have already admitted they missed their development targets and start on the back foot as a result.

Andreas Seidl, now at the helm of Alfa Romeo-Sauber, enters with high expectations ahead of the team's transition into Audi in 2026, while AlphaTauri's long-term future continues to be questioned despite assurances Red Bull will not sell their second-string team.

Expect the season to also see further rumblings regarding new additions to the grid, with Porsche and Andretti among those pushing to join.

As ever, there is plenty to watch out for in F1 and from the first corner to the last there are likely to be surprises along the way.

Charles Leclerc is confident Ferrari can compete with Red Bull for both titles in the new Formula One season.

Ferrari failed to capitalise on their strengths last year and compete with Max Verstappen, who waltzed to a second consecutive championship title.

Early signs ahead of the 2023 season suggest Red Bull remain ahead of their rivals, with Leclerc admitting that is a perception he holds.

However, he believes Ferrari can mount a threat over the course of the season due to the developments from last year.

"From what I can see, it seems Red Bull is a bit ahead. But it's a long season, our goal is still to win the championship," he told Sky Sports.

"I am confident. We have great guys in Maranello, I think we have shown it with the big step forward from 2021 to 2022.

"There were too many mistakes in 2022, we know that, but we've been very honest with ourselves in order to get better for this season.

"The target is still [to win the title]. Even if we are starting a bit of the back foot compared to them in terms of performance, I'm sure we can come back."

Leclerc's assessment that Red Bull begin the campaign ahead of their rivals is shared by Mercedes' George Russell, who expects them to dominate the opening weekend in Bahrain.

"It probably wasn't the smoothest three days we could have hoped for at testing. But the learning we found is going to put us in better stead for this weekend," he said in Thursday's press conference.

"I think it’s definitely fair to say Red Bull are in a league of their own this weekend. But it'll probably be a nice fight for second between Ferrari and Aston Martin."

Lewis Hamilton rebuffed suggestions the 2023 season will be his final year in Formula One and is adamant he will be at Mercedes next season.

The seven-time champion is in the final year of his contract with the team, who are expected to be off the pace of rivals Red Bull in the hunt for the championship.

Speculation that Hamilton will walk away from the sport has persisted ever since a controversial conclusion to the 2021 season, when Max Verstappen pipped him to the title in Abu Dhabi.

Hamilton returned to the grid for 2022, although Mercedes struggled and lost their constructors' championship crown to Red Bull, and is set for a 17th season in F1 in 2023.

The Brit is not set for a swansong, as he hit back at claims from former F1 drivers Jenson Button and Damon Hill that he will retire following the campaign.

"It is ultimately people creating rumours without facts, and it is never helpful. You would have thought that they [Hill and Button] would both know me by now," he told reporters ahead of the opening race of the season in Bahrain.

"I have been with Mercedes since I was 13, and last year we had a difficult year, but I am still here, and whether or not we have a difficult year this year, I will still be here.

"I am a fighter, and we fight as a team. I love the challenge of finding solutions and I still believe I am able to put the car in places that perhaps others are not able to. I love that challenge.

"Of course, I wish we started the season with a great car, but it is the journey that really counts."

Negotiations over a new contract for Hamilton are continuing, with the 38-year-old confident an agreement will be reached.

"There is no hold-up with our contract. I have always been very, very relaxed and I don't feel like I have to get it done right this second. I am in a very fortunate position," he added.

"It will get done when we are ready. I have a great relationship with Toto and with Mercedes and we fully support each other.

"I am really excited about the future together and really proud of the work we are doing, on and off the track and the potential of new things that we can do moving forward.

"We will get there, unless something catastrophic happens between me and Toto [team principal Wolff] and we get in the [boxing] ring, but other than that we are good."

Lance Stroll has been passed fit to race at this weekend's Bahrain Grand Prix after recovering from a wrist injury that threatened to derail Aston Martin's plans for the season opener.

Formula 2 champion Felipe Drugovich was put on standby after Stroll hurt his wrist in a freak cycling accident and had to miss pre-season testing.

There had even been speculation of a Sebastian Vettel comeback, after team principal Mike Krack initially refused to rule out the possibility of the German coming out of retirement.

However, that idea was knocked on the head eventually, and now Drugovich can stand down, too, with Canadian Stroll cleared to take part after undergoing surgery.

The team announced Stroll's involvement in a statement on their website, with the 24-year-old driver saying: "It was frustrating not to be out in Bahrain for the pre-season test and I was disappointed to miss the three days of running. However, given the injury to my wrist, the team and I felt it was best to focus on recovery so that I would be ready for this weekend and the long season ahead.

"It was an unfortunate accident – I fell from my bike when my tyre caught a hole in the ground – but thankfully the damage was not significant and a successful minor surgery on my right wrist fixed the problem very quickly. Since then, I've been working hard with my team to ensure that I am fully fit to compete this weekend.

"Now I'm ready to get my head down and concentrate on racing this weekend – something I'm really looking forward to."

Stroll will be entering his seventh season in Formula One and hoping for a first top-10 finish in the drivers' championship. He finished 15th overall last year, three places behind then team-mate Vettel.

Two-time F1 champion Fernando Alonso will be Stroll's team-mate in the new campaign, having switched from Alpine.

Formula One returns this weekend with Red Bull clearly the team to beat after a dominant 2022 season.

Max Verstappen won his second straight drivers' championship but in far more comfortable fashion than the previous year when the most dramatic of finales saw Lewis Hamilton pipped.

And unlike in 2021, it was a double celebration for Red Bull as the team also took the constructors' title after a run of Mercedes triumphs.

But Red Bull's commanding campaign did not start as strongly as it finished, and hope of a repeat will encourage the chasing pack at this week's Bahrain Grand Prix.

Red Bull pair Verstappen and Sergio Perez were both forced to retire at this event a year ago, while Ferrari's Charles Leclerc controlled proceedings with pole position, the fastest lap and a race win.

Unfortunately for the Scuderia, it was not a sign of things to come.

Verstappen was back on the top step of the podium at the next race and soon disappeared into the distance.

That initial result was nothing out of the ordinary as Red Bull have only once won the first race in the calendar, back in 2011 when they took the first two.

Those slow starts clearly do not hamper Red Bull across the rest of the season, although they will hope to avoid a similar early setback this time and have both Verstappen and Perez off to a fast start.

Charles the chief threat

If Red Bull are to be beaten again this week, last year's victor Leclerc appears the man most likely to profit. In the past six races in Bahrain, he is the only man to secure pole twice. A third would make this his favourite event.

Meanwhile, podiums for both Leclerc and team-mate Carlos Sainz would make Ferrari the first team to tally 800 in F1.

But Leclerc has been guarded on the merits of his SF-23 car, telling F1's Beyond the Grid podcast: "Sometimes I've had a car that feels good, and until you see the lap time, you're like, 'okay, this feels pretty good'. And then you have a very bad surprise watching the lap time. Sometimes it is the other way."

All eyes on Lewis

The driver of most interest this weekend might be the man who finished the season sixth last year. Lewis Hamilton vanished from contention, and while Mercedes' issues were the key factor, he also trailed new team-mate George Russell.

At the very least, Hamilton will expect to fight back and beat Russell this year.

Only in Abu Dhabi (10 points) and Great Britain (zero points) has Russell won fewer points than his 12 in four editions of the Bahrain GP, so the opportunity is there for Hamilton to forge an early lead.

Red Bull will not be selling its second Formula One team AlphaTauri, team principal Franz Tost confirmed.

Reports Germany over the weekend suggested Red Bull's senior management was considering the sale of the team or a relocation from their current base in Faenza, Italy to Milton Keynes, England.

However, a sale has been ruled out in a statement issued by Tost on Wednesday.

"I had some very good meetings with Oliver Mintzlaff [Red Bull's CEO of corporate projects and new investments], who confirmed that the shareholders will not sell Scuderia AlphaTauri, and that Red Bull will continue supporting the team in the future," he said.

"All these rumours have no foundation, and the team has to remain focused for the start of the season to perform better than last year."

Red Bull has owned AlphaTauri – previously known as Toro Rosso – since 2006 and serves as a steppingstone to the senior team for younger drivers.

Speculation of changes across the F1 grid are ever present, with Audi set to take over naming rights of Sauber next season before becoming an official factory team in 2026.

Porsche are also looking to join their sister company the same year, while American motorsport giants Andretti have confirmed their desire to enter F1.

Aston Martin closed the door on a Sebastian Vettel comeback by revealing Felipe Drugovich is the driver they have put on standby for the season-opening Bahrain Grand Prix.

Formula 2 champion Drugovich will step up from his role as a reserve driver if Lance Stroll is unfit to take part in the March 3-5 race weekend. Stroll sustained a wrist injury while cycling, causing him to miss pre-season testing.

Team principal Mike Krack initially refused to rule out the possibility of Vettel returning to the cockpit, despite the German great retiring at the end of the 2022 season.

Vettel, who won four world titles and enjoyed a 16-season Formula One career, has stayed in touch with Krack since hanging up his racing helmet.

Krack declined to say whether Vettel had expressed an interest in a possible one-off return, which would have seen him team up with fellow former world champion Fernando Alonso.

Yet confirmation the 35-year-old would not be involved came on Sunday, with 22-year-old Brazilian Drugovich in line for a possible F1 race debut.

In a statement on Twitter, Aston Martin said: "The team will continue to give Lance every chance to race, pending recovery from his injury. Should he not be fit to compete, then Felipe will drive the AMR23 alongside Fernando."

Aston Martin chief Mike Krack refused to rule out the possibility of Sebastian Vettel coming out of retirement for the Bahrain Grand Prix.

Vettel retired at the end of the 2022 season after winning four world championships over a 15-year Formula One career.

But after Lance Stroll sustained a wrist injury while cycling, causing him to miss pre-season testing, there are rumours of Vettel stepping in to deputise at the season-opening Bahrain Grand Prix next week.

While team principal Krack said "plan A" was for Stroll to be fit enough to drive at next weekend's race, he did not close the door to Vettel making a shock return.

"Plan B we will speak about next week," Krack said. "I have had a couple of phone calls with Sebastian but this was also [the case] last year and will continue in the future.

"First our plan is to have Lance in the car and then we continue to see. You can ask me five times; we have not made a final decision."

Asked whether Vettel had shown an interest in returning, Krack stated: "I will not tell you.

"Don't forget one thing – he had a very thorough plan in mind for his retirement and this is something you have to respect.

"Let's see what happens."

Lewis Hamilton will be eager to put pressure on Mercedes team-mate George Russell and the rest of the grid as soon as the 2023 Formula One season begins.

That is the view of Hamilton's former team-mate Jenson Button after a 2022 campaign where Mercedes surprisingly finished third in the constructors' championship, 244 points behind winners Red Bull.

Hamilton was sixth in the drivers' standings, two places and 35 points behind Russell in the latter's first season with the team.

Russell recorded the only Mercedes win of the season in the penultimate race in Sao Paulo, though Hamilton also produced a strong finish that included a run of three consecutive second-place berths.

After a rare campaign where the seven-time world champion finished behind his team-mate in the championship and went the whole campaign without a race win, Button is expecting a fast start.

"I think he'll start this year flat out," former world champion Button told Sky Sports about Hamilton.

"He's going to be on it from the word go.

"I look forward to seeing that - it's going to put a lot of pressure on George Russell, but I think it's a good pairing and I look forward to that fight.

"Mercedes have given him a winning car for so many years.

"Last year they obviously didn't, but the car did win a race, so you'd say at the end of the year, they were strong.

"And I think Lewis was on it. His performances were very consistent through mid to end of season, very, very quick."

The new season begins with the Bahrain Grand Prix on March 5.

Ahead of the campaign at the team's car launch last week, Hamilton, 38, insisted he expects to sign a new deal, with his current contract due to expire at the end of the season.

Team boss Toto Wolff reiterated that confidence, but Button warned that situation could change if Mercedes produce a car that is uncompetitive once more.

Button added: "It's something we all go through at some point in our career and it's a reason a lot of people retire – because they're not in a winning car any more.

"That's why I left. You can deal with the pressure you put yourself under and the calendar if you're in a winning car. 

"When you're not, it's like, 'you know what, I've had enough, I want to get out'."

Lance Stroll will miss Formula One pre-season testing in Bahrain after the Aston Martin driver was involved in a minor accident while cycling in Spain.

The Canadian's team revealed on Monday that he had sustained injuries that will prevent him from getting behind the wheel this week.

Stroll will be assessed on a daily basis and the 24-year-old is expected to make a quick recovery.

The season-opening Bahrain Grand Prix will be staged a week on Sunday.

Stroll said: "I've had an unfortunate accident whilst training on my bike in preparation for the season.

"I am determined to get back in the car and I am excited about the season ahead with the team. I am motivated to bounce back from this setback as quickly as possible."

Aston Martin stated: "The team wishes Lance a speedy recovery and looks forward to his usual energy and commitment within the team."