Helmut Marko is happy with the result that the 
Red Bull Racing and AlphaTauri drivers achieved in the 
Turkish Grand Prix, but he also sees that the gap to Mercedes was worrying. According to the consultant, Red Bull now need to find out where Mercedes' sudden advantage came from.
 Marko is proud of his drivers: both 
Yuki Tsunoda and 
Sergio Perez gave 
Max Verstappen excellent back cover. 
"Yuki Tsunoda stopped him brilliantly at the beginning of the race," says the Austrian at 
Sport1. 
"Had he got past there faster, he might even have won the race. Because if he had made it behind Bottas, there would have been a change of place for sure."Marko expresses concerns about speed Mercedes
He does worry about the speed of his rivals, although he accepts the 
FIA 's verdict that the Mercedes engines are legal. 
"I don't think Mercedes did anything illegal," he admits. 
"But something has been weird since Silverstone. So it is now up to us to research why they are suddenly so fast.""Is it just the engine or something else? We now have to work day and night to uncover its secret and then counter it. As quickly as possible. It is up to us." If Red Bull don't figure it out Marko doesn't see it so sunny. "If the differences in performance remain the same as in Istanbul, we will have a problem," concludes the Red Bull advisor.