Nico Rosberg is concerned that Mercedes "don't really understand" what is wrong with their W14 car.
The Bahrain Grand Prix was, Mercedes hoped, going to provide evidence that their car concept is capable of competing at the front of the grid. But, instead, Lewis Hamilton finished fifth with George Russell two places further back – and neither of them felt they could have done any better with the machine at their disposal.
And it left Toto Wolff with the grim realisation that they have to undo all their hard work and change tack. "I don't think that this package is going to be competitive eventually," he admitted – and that was after qualifying, before the race had even taken place.