Charles Leclerc topped the sole free practice session at the Miami International Autodrome on Friday. Kimi Antonelli — the 2026 championship leader by virtue of back-to-back Mercedes wins in China and Japan — failed to complete a qualifying simulation lap after a power unit issue struck his car with ten minutes remaining. Max Verstappen was second. The 2026 Formula 1 Miami Grand Prix weekend is a sprint format, which means today’s practice session was the only one before sprint qualifying and the sprint race play out on Saturday. The grand prix itself is Sunday. This is an analysis of what FP1 told us, who has the pace, and what actually matters in a race where rain is now being discussed as a serious factor.
- Leclerc was fastest in sole F1 Miami FP1. Verstappen second. Antonelli had a power unit issue.
- Miami 2026 is a sprint weekend — sprint qualifying is today, sprint race Saturday, grand prix Sunday.
- Rain is forecast for Sunday’s grand prix, which could fundamentally change the title fight outcome.
What FP1 Actually Told Us About the Miami Hierarchy
A single 90-minute practice session in sprint format is both more and less informative than a traditional Friday. More, because teams treat qualifying simulations seriously with no second session to fall back on. Less, because the sprint format creates competing priorities — some teams run long stints for data, others prioritise the hot lap. In Miami 2026, the picture was complicated further by Antonelli's power unit issue.
Leclerc was quickest at the chequered flag, with Ferrari bringing what reports described as a "Macarena front wing" — a design revision from the 2025 Bahrain concept — to Miami. McLaren's MCL40 also arrived in almost unrecognisable form after a significant upgrade package; the car appeared "almost completely different" from its Japan specification. Oscar Piastri was the leading McLaren in third, while Lando Norris had his lap compromised by Alex Albon's Williams at the final corner during his flying lap. Lewis Hamilton was fourth for Mercedes.
The headline performance, however, belongs to Verstappen. Second in practice, three-tenths behind Leclerc — but doing so with Red Bull still operating under the 2026 regulatory framework that has suited Mercedes and Ferrari more than the Milton Keynes team at this early stage of the season. Verstappen has two race wins in 2026 (Australia and Japan was not his — correction: Antonelli won China and Japan, Russell won Australia). Red Bull remains the outfit to watch in terms of single-lap pace on circuits with long straights, and Miami's three straights are among the longest on the calendar.
2026 Championship Standings Before Miami (Round 4)
Source: Formula1.com 2026 season results
The Antonelli Power Unit Issue: What It Means
Kimi Antonelli is 19 years old, driving for Mercedes in his rookie championship season, and leads the 2026 drivers' standings. His power unit issue in FP1 denied him a crucial qualifying simulation lap — the only practice run of the weekend in sprint format. Going into sprint qualifying without full data from a meaningful hot lap run is genuinely problematic. Teams can simulate on the simulator, but the track's specific characteristics — Miami's bumpy Turn 11-14 complex, the stadium section’s surface degradation — require real-world laps to calibrate setup correctly.
Mercedes will have Hamilton's data from his fourth-place FP1 run to cross-reference. But Antonelli's setup may diverge from Hamilton's preferences — they run different baseline configurations. The risk of a mismatch heading into sprint qualifying is genuine. According to Formula1.com, Antonelli's Miami weekend represents his first sprint format as championship leader — a different kind of pressure than the straight race weekends in Australia, China, and Japan.
Ferrari's Miami Upgrade Package
The Macarena front wing design is a significant engineering decision. Ferrari struggled with front-end balance in the opening three races of 2026, with Leclerc consistently reporting understeer on slow-speed corners despite strong straight-line performance. The revised wing generates different downforce characteristics at the front axle, redistributing aerodynamic load toward the car's nose. If it works as Ferrari's data suggests, it closes the gap to Mercedes on low-speed circuits while maintaining the pace advantage Ferrari already has on high-speed sections. Leclerc topping FP1 is encouraging, but one 90-minute session does not confirm the upgrade works under race conditions. The sprint race on Saturday, run over 19 laps, will give a clearer signal.
McLaren's upgrade is equally significant. The MCL40 has been the most consistent points-scorer behind the Mercedes after the opening three rounds, but Piastri and Norris both identified a front-end instability that cost them in slow-speed sectors. The Miami upgrade is said to address exactly that weakness. If both Ferrari and McLaren have solved their slow-speed issues simultaneously, Mercedes' advantage narrows considerably.
Rain: The Factor That Overrides Everything
A US law related to noise ordinances near the Hard Rock Stadium could suspend the Miami Grand Prix if rainfall reaches certain thresholds during the race window. This is not a theoretical concern — it has been discussed in previous Miami editions. For 2026, weather models as of Friday suggest a meaningful probability of rain on Sunday afternoon. If the race is held in wet conditions, the championship implications are difficult to predict. Wet weather erases some of the advantage Mercedes has built through consistent mechanical reliability, and could expose Antonelli's relatively limited wet-weather experience at Formula 1 level.
Verstappen is statistically the best wet-weather driver currently active in Formula 1, according to aggregated performance data compiled by Formula1.com analysts. His second-place FP1 showing on dry tyres already suggests Red Bull have pace in Miami. In wet conditions, Red Bull's probability of winning increases substantially. That matters enormously for the title fight.
You can read our earlier F1 2026 title race analysis for detailed context on why Antonelli's championship lead is considered fragile by several technical analysts. For full coverage of the 2026 F1 season’s regulatory changes, our Motorsport section has ongoing analysis.
Alpine's Surprise Top-Ten FP1 Performance
Both Alpines finished in the top ten during FP1 — a result that reflects either genuine improvement under their 2026 regulatory package or the particular way Miami's layout suits their car characteristics. Alpine finished fifth in the constructors' championship in 2025 after a difficult mid-season; their 2026 car design under the new aerodynamic regulations has drawn cautiously positive feedback from within the team. A top-ten finish at a sprint weekend is worth monitoring. Whether it translates to qualifying and race pace is another question, but the Alpines in both the top ten suggests this is not simply an anomaly.
Key Takeaways
Here is what you need to know about F1 Miami 2026 after FP1:
- Leclerc was fastest in the sole Miami FP1 session. Verstappen second, Piastri third, Hamilton fourth.
- Antonelli missed a qualifying simulation lap due to a power unit issue — a significant complication entering sprint qualifying without full data.
- Ferrari and McLaren both brought major upgrade packages to Miami. The next 48 hours will determine whether they work under race conditions.
- Rain is forecast for Sunday's grand prix — which would benefit Verstappen and complicate Antonelli’s championship campaign.
- Both Alpine cars finished in the top ten in FP1 — a development worth tracking through sprint qualifying.
Frequently Asked Questions
Who was fastest in F1 Miami 2026 FP1?
Charles Leclerc (Ferrari) set the fastest time in the sole free practice session for the 2026 F1 Miami Grand Prix. Max Verstappen (Red Bull) was second, around three-tenths of a second behind. Oscar Piastri was the quickest McLaren in third. Kimi Antonelli (Mercedes) did not complete a qualifying simulation lap due to a power unit issue.
Is F1 Miami 2026 a sprint weekend?
Yes. The 2026 Formula 1 Crypto.com Miami Grand Prix is a sprint format weekend. There is only one 90-minute free practice session, followed by sprint qualifying, then a sprint race on Saturday. The main grand prix takes place on Sunday, May 3, at the Hard Rock Stadium complex in Miami Gardens, Florida.
What is Kimi Antonelli’s championship position in F1 2026?
Kimi Antonelli leads the 2026 Formula 1 Drivers' Championship heading into the Miami Grand Prix — Round 4 of the season. He won the Chinese and Japanese Grands Prix in consecutive races. His 19-year-old status as championship leader is the standout storyline of the 2026 season opening.
Could rain cancel the F1 Miami Grand Prix 2026?
A US noise ordinance related to the Hard Rock Stadium area could suspend the Miami Grand Prix if rainfall reaches specific thresholds during the race window. This scenario has been discussed in previous Miami editions. Weather models as of May 2 indicate meaningful rain probability on Sunday, and the FIA and race organisers are monitoring forecasts closely.
Sofia Brennan’s view at Unicorn Blogger: If the Miami weekend stays dry, Antonelli recovers from the FP1 power unit setback and wins. The Mercedes package remains the most well-rounded in 2026 and a sprint format with limited practice suits teams with strong baseline setups. But if it rains on Sunday, Verstappen wins the grand prix and the title fight tightens considerably. Watch the weather. That is the most important number to track between now and Sunday.
