Opening rounds of the season come armed with enough unknowns at the best of times: everyone starts from zero, there are new cars on show and testing only gives us a cryptic picture of which are working better than others. We've had rule changes before too of course, sometimes fundamental ones. But has any previous set of rule revisions between two seasons been so extensive? We've had big chassis changes on occasion; on other occasions big engine changes. But this time in unison the chassis and, particularly, the engines have altered radically. For the latter the capacity is reduced from 2.4 litres to 1.6, turbos are back, energy recovery is greatly increased, and on top of these we have a fuel, as well as a fuel flow, limit. As if to underline the distinction even the engines are no longer called engines - get used to the age of the power unit
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| The sun shone on Mercedes in pre-season testing Photo: Octane Photography |
What we've been able to decipher from testing is that the order of before has indeed been shuffled: a consequence of the new rules is that engines are now a differentiator, and the Mercedes power unit looks to be the best of the bunch in power, fuel economy and reliability. It also has had a rising-tide-lists-all-boats effect on all four of the teams that use it. But even of the Merc runners the works team looks a cut above in its pace and preparation - the smart money for a Melbourne triumph is on one of the Silver Arrows.


