Track-time mileage is important and the Mercedes, driven by Lewis Hamilton and Nico Rosberg, had a strong test in Jerez,
completing 309 laps.
Ferrari managed 251, while McLaren completed 245.
Crucially, those teams were able to complete car set-up and evaluation work so that when the four-day test in Bahrain starts, they can get down to working on the performance of their new cars.
The Renault-powered teams - Red Bull, Toro Rosso and Caterham - will need to do that baseline work in Bahrain after failing to do so in Spain.
As well as the power problems, Red Bull have had to change the packaging of their car after suffering overheating problems in Jerez.
Winners and losers from F1 testing in Jerez
However, the team will be boosted by the fact Lotus, who are also powered by Renault, were able to complete 100km - the maximum allowed for what was a promotional event -
at Jerez last week,
having missed the first official test.
Reigning world champion Sebastian Vettel will drive the Red Bull on the first two days, with Daniel Ricciardo taking over for the final two days.
A third test in Bahrain follows on 27 February-2 March before the season starts in Melbourne, Australian on 16 March.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.