Lewis Hamilton scored his third victory of the season in Bahrain, but Kimi Raikkonen was the star of the show for Ferrari, grabbing second from Nico Rosberg in the closing stages.
The popular Ferrari team finished in second place for the second race in a row.
Citroen's Yvan Muller won the second race of the day in Marrakech from the reverse grid pole, fighting off teammate Sebastien Loeb for the duration in a race that saw much contact.
Matt Neal took his second BTCC win of 2015 in the final race of the day at Donington, fending off Andrew Jordan in the closing laps after the pair emerged from a frenetic multi-car lead tussle.
Check out how the standings changed after today's race. Lewis Hamilton and Mercedes extends the lead.
Despite his great race Nico Rosberg lost his P2 to Kimi Raikkonen on penultimate lap due to a brake failure.
A commanding drive from Colin Turkington gave Team BMR back-to-back wins in the second BTCC race at Donington, as Matt Neal and Adam Morgan completed the podium after surviving an entertaining scrap.
Indonesia’s Rio Haryanto won his first-ever GP2 victory in his 70th start in the series, charging through from seventh on the grid and holding off the challenge of yesterday’s winner Stoffel Vandoorne.
F1 engine manufacturers have agreed that any move towards 1000bhp engines for 2017 must involve the current V6 engine configuration as a starting point, according to Toto Wolff.
The Bahrain Grand Prix will be something of a step into the unknown for Lewis Hamilton and Nico Rosberg, as Mercedes has yet to fully prove set-up changes made after Friday.
The grid for the first WTCC race in Marrakech has been confirmed following the application of eight grid penalties post-qualifying, accounting for almost half of the 18-car grid.
Mok Weng Sun will again start the new season as one of the firm favourites for the title.
Same top-3 as first race with Davies in second place.
Davies finishes second with Haslam and Sykes in forth and fifth, respectively.
Polesitting Corvette edged out Ganassi EcoBoost Ford