Valtteri Bottas testing in Barcelona

Has Mercedes got the title wrapped up already?

The Honda logo on the 2018 Toro Rosso car

Honda has proved surprisingly reliable partnered with Toro Rosso during preseason testing.

Honda's Masashi Yamamoto

Toro Rosso-Honda has proved surprisingly reliable compared to McLaren-Renault.

Renault's 2018 livery

F1’s three Renault-powered teams have an awful lot to prove this season.

F1 2017 delivered a tense season, but its real gift was the promise of a thrilling 2018.

Maurizio Arrivabene (Ferrari) and Toto Wolff (Mercedes) in the Friday press conference at the 2017 Abu Dhabi Grand Prix.

The 2017 rules changes worked to shake up the field — sort of.

McLaren has binned its Honda partnership.

Timing was everything in Formula One’s least surprising evening of announcements.

McLaren executive director Zak Brown.

McLaren’s switch to Renault is riskier than it may first appear.

The McLaren MCL32 on the track.

McLaren is risking big for success by making a switch from Honda to Renault for 2018.

Fernando Alonso in his garage at the Hungarian Grand Prix.

Fernando Alonso’s future might rest with Red Bull more than it does McLaren or Honda.