Toto Wolff warns F1 rivals ahead of crucial Mercedes test

Toto Wolff has sent a clear message to Mercedes' F1 rivals ahead of a critical test of the team's first major upgrade package in Canada, urging calm and measured execution as the championship battle intensifies.

The team principal stressed the importance of maintaining balance through both success and difficulty as the Silver Arrows prepare to respond to a significant step forward from McLaren in Miami, where the Woking squad scored a double podium and demonstrated that it is now a genuine challenger at the front of the field.

"We will stay balanced, keep learning, and execute each weekend as well as we can," Wolff said. "We won't get too high when we succeed or too low in the difficult moments; that is as true for our drivers as it is for the rest of the team."

Despite Kimi Antonelli extending his perfect winning streak to three grands prix in Miami, the margins are tightening.

McLaren finished second and third just 3.264 seconds behind the 19-year-old, a marked improvement on their earlier-season form. The papaya cars also dominated the sprint, with Lando Norris taking victory ahead of Oscar Piastri.

Red Bull, too, showed signs of life after a disastrous start to the campaign. Max Verstappen qualified on the front row and finished fifth despite an opening-lap spin, with team principal Laurent Mekies confirming the RB22 had closed its qualifying deficit from over a second at the flyaway races to less than two tenths in Florida.

Ferrari, meanwhile, remains firmly in contention with Charles Leclerc and Lewis Hamilton both capable of podium finishes in the SF-26.

To aid the fight, Mercedes is introducing its first significant development package of 2026 in Montreal, after rival teams brought theirs to Florida.

"We head to Canada ready to get back into a regular rhythm of racing," Wolff said. "Our competitors took a step forward in Miami, and we need to respond; seven grands prix in 10 weekends before shutdown is an opportunity to do that and build momentum.

"We bring our first update package of the year to Montréal, but we know that performance is only performance once it is delivered on track."

With Mercedes holding a commanding 70-point lead over Ferrari in the constructors' championship and Antonelli 20 points clear of team-mate George Russell in the drivers' standings, the pressure to maintain momentum is significant, but Wolff was keen to temper expectations.

"Despite being in the middle of May, we are just four races into the season," he added. "There is a long year ahead and, whilst this is an important weekend, it will not decide any outcomes."