Shakedown stats suggest that Mercedes has reacted best to rules overhaul.

While Ferrari might walk away feeling confident, Lewis Hamilton having posted the fastest time of the 5-day 'test', Mercedes clearly rules the roost.

Quite simply, as we know nothing about fuel loads, tyre compounds or pretty much anything else - including the fact that most teams saw no point in such so-called glory runs - Hamilton's time, good as it was, albeit 4.802s off Oscar Piastri's 2025 pole-winning time, didn't really prove anything.

On the other hand, is the fact that over its three days of testing Mercedes completed 502 laps, almost eight race distances, while its nearest rival (Ferrari) completed 440 laps.

Of course, Mercedes chose its running days carefully, and, unlike Ferrari, opted not to run on Tuesday when it rained all day, a factor that may prove advantageous to the Maranello outfit and Red Bull.

To be fair, Isack Hadjar's crash on Tuesday sidelined the Austrian team for the next two days, but that's another matter.

Also impressive were Haas and Alpine, the French team clearly benefitting from the decision to change engine partners, while McLaren, as ever, did things its own way and hasn’t really shown its hand, though the world champions could have done without the fuel system issue that sidelined Oscar Piastri for much of Thursday.

Audi eventually got on top of things, while Cadillac insists that it is taking things one step at a time.

Whether Aston Martin feels that 66 laps was worth all the bother only they know, but it gives Adrian Newey a baseline.

Team Test Mileage

Team	Laps	Miles	Kms
Mercedes	502	1452.7	2337.8
Ferrari	440	1273.3	2049.1
Haas	387	1119.9	1802.3
Alpine	349	1009.9	1625.3
Racing Bulls	319	923.1	1485.6
Red Bull	303	876.8	1411.1
McLaren	291	842.1	1355.2
Audi	240	694.5	1117.7
Cadillac	165	477.5	768.4
Aston Martin	66	191.0	307.4

In terms of power units, once again it is the three-pointed star that comes out on top, Mercedes-powered cars completing 1,142 laps, compared to Ferrari's 992.

With Williams missing the test, like Ferrari, Mercedes only powered three teams over the course of the shakedown, and, other than the works team, Alpine also put in some strong mileage.

Considering it's their first attempt, Red Bull Powertrains must be delighted with their 622 laps, which in fact, considering they only powered two teams, puts them just behind Ferrari in terms of average mileage.

There's still a long, long way to go before Melbourne, but Toto and the guys must surely have had a better night's sleep last night than their rivals.

Engine Manufacturer Test Mileage

Engine Manufacturer	Laps	Miles	Kms
Mercedes	1142	3304.7	5318.3
Ferrari	992	2870.6	4619.7
Red Bull	622	1799.9	2896.6
Audi	240	694.5	1117.7
Honda	66	191.0	307.4