The German manufacturer hopes that this weekend's event at Barcelona will deliver a better opportunity to understand the true potential of its car overhaul than it was able to gauge at Monaco.
With the tight and twisty Monte Carlo layout making it almost impossible to get clear data on the progress made, the high-speed aero demands of Barcelona should better allow a clear picture to emerge.
And rather than stick with the same package it used in Monaco, Mercedes has made two refinements to its car ahead of free practice.
An upper mirror vane has been removed as it is no longer required with the new sidepod solution introduced in Monaco. This should help improve airflow to the rear of the car.
Source: Autosport