Sergio Perez's Canadian GP Weekend to Forget: A Reprimand, a Mechanical Failure, and a Call for Answers

Sergio Perez’s 2026 Canadian Grand Prix was a weekend that lurched from one disaster to another, encapsulating the growing pains of the new Cadillac F1 project. The event started with a driver error that put him at the back of the grid, and ended in a frightening mechanical failure that has prompted an urgent inquest. This is how the weekend unfolded, from the qualifying drama to the shattered suspension, and what it means for the team moving forward.

The Q1 Incident: A Costly Misjudgment

The trouble began on Saturday during Q1. As Perez completed a slow cool-down lap and approached the final chicane (Turn 13) at the Circuit Gilles Villeneuve, he was completely unaware that Aston Martin’s Fernando Alonso was closing in rapidly on a flying lap . Perez mistook Alonso’s positioning and weaving for a fellow driver also on a cool-down lap, and his slow pace forced the Spaniard to check up and abandon his lap entirely .

The stewards promptly announced a post-session investigation. After reviewing the evidence, they chose to issue Perez a formal reprimand—his first of the season—but crucially, no grid penalty was applied . The officials accepted the mitigation that Perez had mistaken Alonso’s movements for typical cool-down weaving, a common sight at that part of the circuit . The damage, however, was already done. Perez qualified dead last in 20th place, setting a lap time of 1:15.429, over four-tenths behind Alonso in 19th .

The Race: From Strategy Gamble to Catastrophic Failure

Starting from the back, Perez and the Cadillac team opted for a high-risk strategy, beginning the race on intermediate tyres. The gamble did not pay off, and the Mexican was left running deep in the pack as others capitalized on the tricky conditions .

Despite the early strategic setback, Perez later noted that the car’s underlying race pace was genuinely encouraging, calling it a “massive step” forward for the team . That promise was brutally extinguished on lap 39. As Perez approached the pit entry, onboard images from his car revealed a terrifying issue: he was having to turn the steering wheel significantly to the left just to keep the car pointed straight . Moments later, under light braking, the front-right suspension of his Cadillac MAC-26 collapsed without warning .

The car’s front-right corner buckled, scattering carbon-fiber debris across the pit entry road as the car sagged helplessly. It was the first time in the 2026 season that Perez had failed to finish a Grand Prix, with the official classification noting “suspension” as the cause of the DNF . Witnessing the failure, F1 commentator Martin Brundle remarked on the broadcast, “Oh, no, it just broke… he wasn’t even braking that hard” . The fact that the incident occurred near the pit lane, rather than at high speed on the circuit, was a small mercy.

Perez Demands Answers from Cadillac

In the aftermath, Sergio Perez did not mince words. He publicly urged the Cadillac Formula 1 Team to launch a thorough and immediate investigation into the root cause of the collapse, calling the failure “bizarre” and a source of embarrassment .

“It’s something we need to investigate, understand, and hopefully get on top of,” Perez stated, emphasizing the urgency of resolving the issues before the upcoming European races . His frustration was palpable, with the veteran driver warning that recurring operational and mechanical problems were actively undermining the team’s performance trajectory . F1i’s driver ratings gave Perez a neutral 5/10 for the weekend, concluding there was absolutely nothing he could have done about the failure .

A Busy Weekend in the Stewards' Office

Perez’s dramas were just one part of a weekend that saw the FIA stewards work overtime. A raft of investigations involving some of the sport’s biggest names kept the officials busy from sprint qualifying through to the post-race checks.

Lewis Hamilton was at the center of two separate investigations. For the sprint race, he was cleared of any wrongdoing after an incident where he allegedly left the track and gained an advantage against McLaren’s Oscar Piastri at the final chicane. The stewards ruled that Piastri was not in an overtaking position, meaning Hamilton gained no “lasting advantage” . He was investigated a second time after qualifying for allegedly impeding Pierre Gasly, but again escaped a penalty after the stewards and the drivers involved agreed no unnecessary holding-up had occurred .

Nico Hulkenberg (Audi) received one of the more unusual penalties of the season. He was handed a suspended stop-and-go penalty and an official reprimand for being out of position at Safety Car Line 1 during the third formation lap. The FIA deemed the standard penalty “extremely harsh” for what it considered a minor and unusual infraction, meaning Hulkenberg will only serve the stop-and-go if he commits a similar breach again .

Liam Lawson (Racing Bulls) was involved in the same formation lap incident as Hulkenberg. The official FIA document confirmed that Lawson was also out of position and left the grid before his rival, earning him an official reprimand—his first of the season . The stewards noted that Lawson had moved “sooner than expected” but, unlike Hulkenberg, he did not receive a further penalty .

George Russell (Mercedes) was investigated after sprint qualifying for a potential breach of the Race Director’s Competition Notes concerning his sector times. The stewards took no further action in that case . However, his weekend ended in disaster on lap 30 of the Grand Prix when a sudden power unit failure forced him to stop on track and retire from the race, dealing a significant blow to his championship aspirations .

From impeding and track-limit cases to procedural infringements and a major power unit failure, the stewards’ workload in Montreal made it one of the most legally intricate and penalty-strewn race weekends of the 2026 season.