Mercedes and Ferrari are set to introduce new upgraded engines at the Belgian GP as the championship battle hots up.
Sky F1's David Croft runs the rule over all 20 drivers at the halfway stage of the season. Who has shone and who has struggled?
Valtteri Bottas has picked up a 10-second time penalty for colliding with Daniel Ricciardo, although stays in fifth place.
Both Lewis Hamilton and Valtteri Bottas spin at the same corner during Practice 3 of the Hungarian GP.
The Mercedes drivers believe they could have been left to race to the finish at Hockenheim, but accept the team's call.
Valtteri Bottas has signed a new deal with Mercedes to stay with the world champions, with a firm deal for 2019 and option for 2020.
Mercedes believe they had F1's fastest car during the sport's triple-header and intend to put recent disappointments behind them.
Valtteri Bottas says it was a mistake not to pit under the Safety Car during the British GP after plummeting down the field on the final laps.
Valtteri Bottas will use a new engine at the British GP in a precautionary change by Mercedes after the Finn's DNF in Austria.
Mercedes have admitted they are still not entirely certain Lewis Hamilton and Valtteri Bottas will avoid British GP grid penalties.
Mercedes have accelerated F1's development war with Ferrari and Red Bull by unveiling a "major" car upgrade package in Austria.
Sebastian Vettel said he went to see Valtteri Bottas after Sunday's French GP and taken responsibility for their first-lap crash.
Mercedes have introduced their new upgraded engines for the French GP in a potentially key boost to their championship hopes.
Valtteri Bottas has conceded that Mercedes cannot be considered the favourites for this weekend's returning French GP.
Mercedes are now not running their upgraded engine at this weekend's Canadian GP due to a "quality issue" with the package.
Daniel Ricciardo has stood by his belief that Valtteri Bottas should have been more daring when attempting to win the Bahrain GP.
Sky F1 analyst Mark Hughes assesses the form of the 2018 Mercedes and the extent of the world champions' potential problems...
Valtteri Bottas "bottled" his chance to overtake Sebastian Vettel late on in the Bahrain GP, Mark Blundell has told the F1 Report.
Toto Wolff admits Mercedes thought their Bahrain GP tyre strategy had given them a "90 per cent" chance of beating Sebastian Vettel.
Toto Wolff does not believe Mercedes have another 'diva' on their hands with their 2018 car despite Ferrari's Bahrain supremacy.
Don't miss out on F1 2018
The latest news and rumours with a punch
The latest rumours from the F1 paddock
All the dates you need to know for F1 2018
Next season's key dates and line-ups
©2018 Sky UK