The team endured another difficult weekend at the Miami Grand Prix as struggles in practice and qualifying were followed by more encouraging pace in the race.
The team has admitted, however, that this rollercoaster of form that the W14 has demonstrated has left it unable to understand exactly what has gone wrong.
PLUS: How Verstappen defeated Perez in Miami
For the next race at the Emilia Romagna GP, Mercedes is introducing a major update, which will include changes to the sidepod, floor and front suspension.
And while the team hopes that the new package will deliver a step forward in form, more critical, reckons boss Toto Wolff, is the way that the changes should help deliver some answers about the faults in the current car.
Wolff is not expecting a dramatic change in fortunes from Imola, but believes the knowledge gained could prove significant for the long term.
“We need to manage our own expectations, because we're bringing an update package that's going to consist of new suspension parts, and bodywork and some other things,” he said.
Source: Autosport