Wolff cautious of "blisteringly quick" Ferrari in Barcelona 

Mercedes team principal Toto Wolff remains sceptical of his team's start to the season, as the Austrian thinks there is still a lot of area for improvement for the Silver Arrows next to the "blisteringly quick" Ferrari's.

The German team have had a historic start to the season. Never before has a team started a team with four consecutive one-twos in Formula 1 history. Still, it came with a slice of fortune, with Charles Leclerc famously breaking down during the Bahrain Grand Prix when streets ahead of the two Mercedes cars.

With the Spanish Grand Prix coming up, and with Ferrari introducing their new power units there, Mercedes will have their work cut out for them this time. Wolff knows this.

“Despite the good start to the season we remain quite sceptical of our own performance and know that there are a number of areas where we can and must improve," he told Crash.net.

“We anticipate a tough and competitive weekend, first against our rivals and also between our drivers. Everything is still very much up for grabs this season and we will be keeping our foot firmly to the floor.

“Nobody would have predicted four consecutive Mercedes 1-2s after winter testing.

“But here we are having scored 173 points in the first four races - a remarkable result which is first and foremost testament of the amazing work of every single member of the team. Our devotion to the task, our hunger for victory and our love of racing are stronger than ever.

“The results seem to paint a relatively clear picture, but the truth is that they're too flattering. The performance has fluctuated in the first four races. We had the fastest car in Australia and China, but we won in Bahrain thanks to our reliability when we were on the back foot in terms of speed.

“And while our race pace looked good in Azerbaijan, we were never able to build a truly comfortable gap to our rivals.

“So there is no complacency about our situation because we know that it's not truly representative of the balance of power this season so far.”