Tyre problems Mercedes F1 team had in the last two races in Austin and Mexico have nothing to do with the decision not to use the controversial rear wheel design with cooling holes, claims their boss Toto Wolff.

In the last two years, Mercedes hasn't changed their front wing too much, which obviously performs well in their aerodynamic package of their F1 cars and in Russia they have introduced a new version with several minor changes.

Mercedes has brought several aerodynamic modifications to its W09 in Russia and among them are the new dual rear wing pillars that follow Ferrari's development direction.

Mercedes introduced their biggest package of aerodynamic improvements in Austria for their 2018 F1 car W09 in Austria. The W09, which in France got a new specification of their M09 F1 engine, has completely revised sidepod concept, rear view mirrors, rear wing endplate and floor details.

Cooling the F1 car is of critical importance for aerodynamic efficiency so the teams are constantly on the edge of cooling requirements to sacrifice less aero performance - we bring an overview of how the world champions adapt their W09 to specific cooling requirements in Bahrain.

During the pre-season testing, Mercedes tested two versions of the front wing on their 2018 F1 car W09, which were mostly different in the design of the endplates, and also the cape alongside the nose that this year is used by Williams on their FW41.

The diffusers are critical for the aerodynamic efficiency of modern F1 cars and the Mercedes W09 has one of the most developed and the detailed diffusers that has serrated gurney tab in its middle section.

World champion Lewis Hamilton is satisfied with the last day of the first test in Barcelona and the feeling he has for the new Mercedes W09, which he described as the 'older sister' of last year's W08.

World champions Mercedes revealed their new 2018 Formula 1 car W09 as they hope they can win the drivers' and constructors' titles for the fifth consecutive year.

First photograph of the new 2018 Mercedes F1 car emerged after Valtteri Bottas tested the new W09 for the first time at Silverstone, ahead of team's official launch scheduled for afternoon.