McLaren MP4-25 - modified diffuser

McLaren have had to modify the MP4-25's rear diffuser following a rule clarification from the FIA. The horizontal window in the central section was considered to be wider than necessary for simply allowing access for the external engine starter. They have kept almost the same shape (see inset) but with a smaller opening.

Force India VJM03 - adjustable front wing flaps

Together with new wider central pillars, which are similar to those on the Mercedes, the Force India drivers could use adjustable flaps (red arrow) for the first time in Australia in order to reduce the understeer problems they endured in Bahrain.

Ferrari F10 - revised front wing

Ferrari have introduced a new aero package for the F10 in Melbourne. The new front wing has notably different endplates. The outer small turning vanes are now more straight (1) and lower, while the endplate itself is more curved towards the outside (3) at the rear to better direct airflow away from the front tyres. With this new shape, the vertical gurney flap (2) has been reduced.

McLaren MP4-24 - revised front wing endplates

The stewards in Bahrain requested McLaren change the profile of certain parts of their front wing endplates (in yellow), to give previous sharp edges a safer, more rounded shape. They have thus introduced this revised solution in Australia, the changes coming in an area that is very important in controlling air vortices in front of the front tyres.

Renault R30 - modified front wing endplates

Renault have modified the front wing they introduced in Bahrain for the Australian Grand Prix. The new version (left drawing) features a different version of the top flaps small endplate. As well as being smaller, it has also been reshaped, and is now wing shaped rather than square in profile as previously (right drawing). Robert Kubica tested this solution during Friday practice and both he and team mate Vitaly Petrov ran it during Melbourne's qualifying and race.

BMW Sauber C29 - 'F-duct' system

BMW Sauber are the first team to introduce their own version of McLaren's innovative F-duct system, the speed of introduction helped by the fact that they had already tried using a critical part of this solution - a rear wing with a slot in it - at last years Singapore race. That slot effectively creates a three-element rear wing. However, there are notable differences compared to the McLaren system. The air directs on to the main section of the wing (longer blue arrow and yellow highlighted area), not the flap, whilst the 'F-duct' itself (smaller blue arrow) is positioned on the sidepods, not on top of the chassis like on the McLaren.