Mercedes have been the team to beat since the current power unit regulations arrived in 2014. But the 2017 season was the toughest fight yet.
Kimi Raikkonen ended the season 112 points behind Sebastian Vettel. This was a pretty fair reflection of how far off his team mate's pace he was.
The running joke about Romain Grosjean used to be first-lap crashes. Now it's angry radio messages, of which there was plenty in 2017.
In the round-up: No return for Kubica? Sirotkin 'is Williams favourite' • Red Bull have 'good options' if Ricciardo leaves • Force India 'did not receive illegal loans'