Williams claimed a first on Wednesday by revealing their 2015 car before any of their Formula One rivals had taken the wraps off theirs.
Monaco's Leclerc, who had started on pole position for the first time, lost power with 10 laps to go while leading and finished third with an extra point for the fastest lap.
Kimi Raikkonen took pole position on an all-Ferrari front row for the Belgian Grand Prix.
Ferrari welcomed on Thursday a ruling by Formula One's governing body that stripped McLaren of their constructors' points and effectively handed the title to the Italian team.
Ferrari's Michael Schumacher and Rubens Barrichello finished second and third respectively.
Sebastian Vettel won a tense Hungarian Grand Prix on Sunday in a Ferrari one-two that stretched his championship lead to 14 points after Mercedes rival Lewis Hamilton sportingly surrendered third place to his teammate.
Lewis Hamilton seized victory from the jaws of defeat after McLaren made their Formula One championship leader sweat for his second win in a row.
Nico Rosberg drew first blood for Mercedes in the new Formula One season with a dominant Australian Grand Prix victory on Sunday after pole-sitter Lewis Hamilton and world champion Sebastian Vettel retired with reliability problems.
Bruno Senna has been given a five-place grid penalty for the Singapore Grand Prix after his Williams team changed his gearbox ahead of Sunday's race.
Summary of sports events and persons who made news on Monday
Formula One breathed a sigh of relief on Sunday after the sport's new 'halo' head protection device saved Charles Leclerc from what might have been a potentially serious impact.
Lewis Hamilton has put trials and tribulations behind him and is raring to make his first British Grand Prix appearance for Mercedes this weekend in a car he says is better than last year's McLaren.
The British rookie, who celebrated his first Formula One pole in Canada last weekend, pipped double world champion Alonso in final qualifying on another sizzling hot day at the Indianapolis Motor Speedway.
Formula One championship leader Sebastian Vettel looked good for pole position at the Indian Grand Prix on Saturday after completing a practice hat-trick.
Formula One has lost another of its principals.
Seven-times Formula One world champion Lewis Hamilton was awarded a knighthood in the UK New Year's honours list published on Wednesday.
Double Formula One world champion Lewis Hamilton has agreed a new three-year contract that will keep him at Mercedes until the end of 2018, the team announced on Wednesday.
Pirelli are coming under pressure to make longer-lasting Formula One tyres after Sunday's Chinese Grand Prix saw drivers lifting off the throttle rather than go flat-out to the flag.
'Together we achieved outstanding results and in time our record will be recognised on its own merits'
Williams's Formula One championship challenge is on after they ousted McLaren as Ferrari's closest rivals.
The Mercedes driver was fastest in every phase of qualifying to take pole with a time of one minute 42.553 seconds, a track record.
Carlos Sainz put Ferrari on pole position for the US Formula One Grand Prix in Austin, Texas, on Saturday, with Red Bull's double World champion Max Verstappen joining the Spaniard on the front row.
Formula One's record 22 race calendar for 2014 is 'beyond the limit' for teams but looks likely to be trimmed before it becomes definitive, according to Red Bull team principal Christian Horner.
The Korean Formula One Grand Prix has been formally dropped from the 2015 calendar after its surprise inclusion last month for contractual reasons.
Force India presented their new Formula One car on Friday with only one driver, Britain's Paul Di Resta, in attendance and mystery surrounding the identity of his likely team mate.
The McLaren test driver said he dreamed of inheriting Fernando Alonso's vacant seat at the Formula One team next season.
World champion Hamilton stormed to pole with a record lap of one minute 21.164 seconds at Albert Park, with a gap of more than six-tenths of a second to the second placed Ferrari of Kimi Raikkonen.
Britain's Lewis Hamilton seized his first win for Mercedes in the Hungarian heat on Sunday while Red Bull's Sebastian Vettel forged 38 points clear in the Formula One championship after finishing third.
Formula One champion Fernando Alonso will do his talking on the track now that McLaren team boss Ron Dennis has revealed they are barely on speaking terms, the Spaniard said on Thursday.
Formula One said a tribute was in the works, with details to be confirmed. A minute's silence is likely before the race.
McLaren and Ferrari renew hostilities when Formula One's increasingly bitter rivals face off in the heat of the Hungaroring on Sunday.
Triple Formula One world champion Lewis Hamilton won the Austrian Grand Prix on Sunday after a last-lap collision with Mercedes teammate Nico Rosberg as they fought for the lead.
Australian Mark Webber seized pole position for the South Korean Formula One Grand Prix on Saturday with title-chasing Red Bull teammate Sebastian Vettel having to settle for second place on the starting grid.
Max Verstappen put Red Bull on pole position for the Canadian Grand Prix with Alpine's Fernando Alonso leaping onto the front row alongside the Formula One championship leader in a wet qualifying on Saturday.
Formula One champion Lewis Hamilton will race triple Olympic cycling gold medallist Chris Hoy around Wembley Stadium next month as a warm-up for the Race of Champions event, organisers said on Tuesday. However, 23-year-old Hamilton will be at the wheel of a Mercedes road car while Hoy will be pedalling a cycle on a parallel track constructed over the turf of the national soccer stadium.
His British team mate Lewis Hamilton will start alongside on an all-McLaren front row, with Ferrari's Felipe Massa qualifying third.
Formula One championship leader Nico Rosberg snatched pole position from Mercedes team mate Lewis Hamilton in the final seconds of a marathon Hungarian Grand Prix qualifying session on Saturday.
Charles Leclerc put Ferrari on pole position for their home Italian Formula One Grand Prix on Saturday in a qualifying session that ended in farce and with drivers under investigation.
