Toto Wolff: "We see all teams as a threat"

Mercedes boss Toto Wolff is worried about all teams ahead of the upcoming season. On Wednesday morning, the world champions revealed their new car to the world.

Wolff confirmed he remains cautious in the Mercedes press release.

"The 2019 season will be a new challenge for all of us. The regulations have changed quite substantially. We have to start from scratch, we need to prove ourselves again," Wolff said.

Mercedes are once again favourites for the 2019 titles. Lewis Hamilton is chasing a sixth world championship, while Valtteri Bottas will be keen to improve. They've won each and every championship in Formula 1's current era. On Wednesday afternoon, they will complete an official shakedown around Silverstone.

Next week, all teams will be testing in Barcelona. And Wolff confirms the team are looking forward to this date.

"We're eager to hit the ground running in Barcelona," Wolff added.