Russell leads very hot Barcelona GP FP1 session

George Russell set the early benchmark at the Circuit de Barcelona-Catalunya as a hot and hectic FP1 for the Barcelona Grand Prix underlined both Mercedes’ strength and the challenges awaiting the field this weekend. With track temperatures soaring to 47°C, rear grip and tyre degradation dominated the narrative of the opening hour in Spain.

Mercedes Hit the Ground Running in FP1

Russell Fastest from the Outset

Russell’s advantage came early on soft tyres, when he went nearly seven tenths quicker than Max Verstappen on comparable runs. That margin shrank as others improved, but the impression remained: Mercedes’ upgrades are working as intended at this traditional, aero-sensitive circuit.

Piastri and Leclerc Keep the Pressure On

Oscar Piastri finished second, just 0.203s adrift, despite reporting a brake vibration that McLaren confirmed could not be resolved until FP2. Impressively, the Australian was consistently two tenths off Russell on both medium and soft compounds, suggesting McLaren may be closer than pre-session comments had implied.

Charles Leclerc completed the top three for Ferrari, half a second off the lead. Ferrari were expected to struggle on the long straights, but Leclerc’s pace hinted at a competitive downforce package, even if outright efficiency remains a question for qualifying.

Rookies Steal the Spotlight

Fornaroli and Aron Shine

FP1 featured a heavy rookie presence, and several took full advantage. Leonardo Fornaroli was a standout, ending the session fifth for McLaren, while Paul Aron impressed just behind in sixth for Audi. Both drivers looked composed despite the tricky rear grip conditions.

Dino Beganovic placed eighth for Ferrari, showing solid long-run pace, while Arvid Lindblad made the top ten for Red Bull. In contrast, Gabriel Bortoleto endured a difficult session, repeatedly battling oversteer and running wide more than once. “I’m sideways everywhere, zero grip,” he reported over the radio.

Mixed Fortunes Elsewhere

Not all rookies enjoyed clean running. Colton Herta had a nervous moment over the kerbs and asked the team to “check the floor”, while Luke Browning failed to complete a single lap due to an electrical issue on his Williams.

Heat, Degradation and Data Gathering

Tyres Under Severe Stress

High degradation was evident throughout the session. The soft tyres were largely good for a single push lap, with blistering visible on the front-left tyres of several cars. This could have major implications for qualifying and race strategy, especially with even hotter conditions forecast for Sunday.

Teams spent much of FP1 in data-gathering mode, with aero rakes and flow-vis paint visible across the pit lane. Barcelona remains a critical benchmark for development, and this session was as much about correlation as lap time.

Williams and Reliability Concerns

Williams endured a frustrating hour. Carlos Sainz was delayed early by a car that would not “switch on,” while Browning never made it out at all. Lost mileage here is particularly costly given the volume of setup work required at this circuit.

What to Watch in FP2

With several race drivers returning for FP2 — including Antonelli, Hamilton and Norris — the competitive picture will sharpen quickly. For now, Mercedes look like the team to beat, but with tyre management emerging as a defining factor, this Barcelona weekend is far from settled.