Toto Wolff downplayed the dominant Mercedes one-two in Spain and said the team would be foolish to repeat its error of Malaysia and write off Ferrari.
Spain is an aero-dependent circuit and often seen as an indicator of how strong a car will be for the rest of the season. Nico Rosberg finished over 45 seconds ahead of third-placed Sebastian Vettel and declared after the race that the result was proof Mercedes is winning the development battle against Ferrari.
Ferrari's only victory of the season came in Malaysia, something Mercedes labelled a "wake-up call" at the time having underestimated the Maranello team's chances. Team boss Wolff was keen to preach caution after Rosberg's win in Spain.
"We are always sceptical about so-called gaps," Wolff said. "It can turn against you pretty quickly if you don't stay on your toes and that is what we have done in the last couple of weeks. We have not looked left or right, we have concentrated on our own job of bringing the updates to the car. Some really impressive jobs from the guys on the engine and chassis side. If manage to do them in a quiet, confident and diligent way, then eventually the result will come towards you. That is why I wouldn't want to be over optimistic and say that is how it is going to continue, because it is easy to be caught out as we saw in Malaysia."
One of the main issues in Malaysia was Ferrari's ability to look after the tyres better in extreme heat. Though the heat was not so much of a factor in Spain Wolff said the team has worked hard to understand where it was struggling.
"We have learned a lot from Malaysia. We worked a lot on trying to understand. You must imagine there are so many factors contributing to how the tyre performs, so many variables, various parameters in terms of temperature and pressure, downforce on the tyre... all that then gives you a result, so we have spent a lot of time assessing and analysing where this car in this season with this particular tyre sits best."
Wolff pointed out that both cars were fairly evenly matched through the first two sectors in Barcelona and does not think there is one simple answer to the size of Rosberg's advantage over Vettel.
"There is no silver bullet. There is no such thing that says it is the key part of the car that makes it more competitive than the enemy, it is lots of things put together and you can see that the teams were pretty much even in sectors one and two, but we had a really strong car in sector three, which low speed mechanical grip and making the tyres work and keeping them in the right window. Different for every tyre and I would say, if I could pick one singular item, it is having a quick car through sector three."