Charles Leclerc emerged as the quickest driver during the sole practice session for the Miami Grand Prix, benefitting from a significantly updated Ferrari package. His two fastest laps were sufficient to beat Red Bull's Max Verstappen by just under three‑tenths of a second, suggesting that Mercedes may have relinquished its claim to the outright fastest car as the field prepares for the sprint‑qualifying session scheduled for 9:30 pm on Friday, which will be broadcast live on Sky Sports F1. The Ferrari driver posted a best time that left the nearest challenger, McLaren's Oscar Piastri, in third place. Piastri's teammate, Lando Norris, appeared even more competitive; had he not been held up by traffic and a near‑collision with Williams' Alex Albon, Norris could have been within a whisker of Leclerc's mark.
Lewis Hamilton, the other Mercedes driver, trailed his teammate by 0.467 seconds and remained consistently behind the Ferrari throughout the ninety‑minute practice window—a pattern that mirrors the performance gap observed at the Japanese Grand Prix at the end of March. Mercedes entered the season with a flawless record, winning the first three rounds and remaining unbeaten in every competitive session to date.
Yet, the team has introduced the fewest upgrades among the front‑running constructors. The only modifications to the Silver Arrows this weekend were a revised front‑corner assembly and a new exhaust‑tailpipe, while rivals such as McLaren, Red Bull and Ferrari have brought fresh floor designs and other aerodynamic components. This disparity in development activity raises questions about whether the German outfit can sustain its early‑season dominance.
George Russell, who qualified sixth, was roughly eight‑tenths of a second off the pace. He followed Italy's Antonio Alonso Antonelli, who set his personal best on the hard compound after a power‑unit glitch prevented a run on the softer tyre.
The power‑unit issue also sparked a worrying report from Russell, who described hearing a strange, steam‑engine‑like noise emanating from the turbocharger. If that symptom proves to be a symptom of a deeper reliability problem, it could become the biggest headache for Mercedes as they head into a critical weekend. The drivers' championship standings currently show Antonelli leading Russell by nine points, but the points gap could narrow quickly if the Mercedes cars fail to deliver the expected performance in Miami. Sky Sports F1 analyst Karun Chandhok questioned the team's readiness, asking whether Russell might be "sandbagging" or struggling with a sub‑optimal setup.
"What have Mercedes got in their pocket?" he mused, highlighting the uncertainty surrounding the team's technical direction. Since the Japanese round, a five‑week hiatus gave every team—except Aston Martin—a chance to work on upgrades. Ferrari led the upgrade race with eleven new components, a program that appears to have paid dividends given Leclerc's blistering lap times in a chassis that already excelled through the corner sections of the circuit. The new floor and revised suspension have seemingly increased downforce, allowing the Prancing Horse to extract more grip without sacrificing straight‑line speed.
McLaren and Red Bull also arrived in Miami with cars that look substantially different from those that raced in Japan. McLaren, which had already shown signs of progress over Mercedes in the previous event, saw Norris shine in practice, raising hopes that he could add a second victory at the venue where he claimed his first Grand Prix win earlier in the 2024 season. Red Bull, meanwhile, posted an average lap time just over a second slower than the leaders, but the team believes the gap can be narrowed as Verstappen receives a more balanced platform to push harder.
Ferrari team principal Laurent Mekies told Sky Sports F1 that the session was primarily an internal benchmark: "We only looked at ourselves during that session. After the big break and with all the major changes on the car, it was crucial to assess us against us. In China and Japan there were many things that prevented Max and Isaac from extracting the maximum, and that's what we're trying to fix now.
The gap to the competition will be examined later, but there are clear signs that Max now has a car he can push a little more with." This candid assessment underscores Ferrari's confidence that its development trajectory is on the right track. The weekend schedule is packed with supporting events: Friday will feature an F2 qualifying session at 7:25 pm, followed by a team‑principals' press conference and the sprint‑qualifying later in the evening. Saturday includes the F2 sprint race, a sprint build‑up show, and the Miami sprint itself, with post‑race analysis from Ted's Sprint Notebook. Sunday culminates with the F2 feature race, a build‑up to the Grand Prix, the main race at 9 pm, and a comprehensive reaction segment after the chequered flag.
All of the action will be streamed live on Sky Sports F1, with the option to watch via the NOW platform without a long‑term contract. Fans are encouraged to use a Chrome browser for optimal video playback. As the 2026 season resumes in Miami, the weekend promises a blend of high‑stakes sprint racing, strategic battles, and the potential for a shifting balance of power among the sport's elite teams.