George Russell opened Week Two of Bahrain Pre-Season Testing 2026 on top of the timing sheet, but Day 1 of the final test had more than one story running. Russell’s 1:33.459 put Mercedes fastest by just a hundredth of a second, yet it was Aston Martin’s mounting problems and Hamilton’s lost afternoon that caught the eye as much as anything at the front.
Key Points – Bahrain Pre-Season Testing 2026 Week 2 Day 1 Round-Up
- Russell fastest overall with 1:33.459, 0.010s ahead of Piastri
- Leclerc P3 on a prototype Pirelli compound in the morning session
- Hamilton limited to 44 laps after an afternoon technical issue
- Aston Martin managed just 54 laps across the full day
- Mercedes completed 147 laps across both drivers
- Lindblad second highest mileage of the day on 75 laps
- C3 accounted for 72% of total mileage on Day 1
- Race start simulation completed cleanly at the end of the day
Track Activity: Morning To Nightfall
Haas were first out at 10am local time with Esteban Ocon in the VF-26, working through baseline set-up runs in cool, foggy conditions that cleared to sunshine and 26°C by the lunch break.
Leclerc went fastest in the morning session, posting a 1:33.739 on a prototype Pirelli compound. That time held through the break before the afternoon session reshuffled the order.
Russell took over from Antonelli after lunch and gradually worked up to a 1:33.459, overtaking Piastri’s 1:33.469 late in the session when conditions cooled and the track came to the drivers. The Australian’s effort came earlier as the sun dropped. In the end, a hundredth of a second separated them at the top.
Lando Norris was fourth on 1:34.052. Antonelli completed the top five after his morning programme, with Isack Hadjar sixth for Red Bull despite losing most of his morning to a technical issue that kept him at just 13 laps before the break. He recovered well in the afternoon to post 1:34.260 across 66 total laps.
Hamilton’s day ended earlier than planned. An unspecified technical issue kept the seven-time champion in the garage through much of the afternoon. He managed 44 laps and a best of 1:34.299, leaving him seventh and 0.840s off Russell.
Carlos Sainz took eighth for Williams on 1:35.113. Colapinto followed in ninth for Alpine, with Bortoleto rounding out the top ten for Audi.
Arvid Lindblad quietly recorded 75 laps for Racing Bulls, the second highest individual mileage of the day behind Russell’s 76.
Reliability & Distance
The day’s bigger story sat further down the order.
Aston Martin arrived in Week Two carrying questions from Week One and left Day 1 with more of them. Fernando Alonso ran 28 laps before a power unit issue sent him into the garage for around four hours. Lance Stroll took over and triggered a red flag when he lost the rear at Turn 10 and beached the AMR26 in the gravel at Turn 11. Between them, the team completed just 54 laps across the full day. With only two test days left before Melbourne, that is a serious problem.
Cadillac also struggled with running time. Sergio Perez managed 24 laps. Valtteri Bottas added 35. The new works entry is running out of pre-season time quickly.
Mercedes completed 147 laps across Antonelli and Russell, with the team confirming the W17 updates were working as expected. Alpine completed 121 laps across Gasly and Colapinto. Haas completed 107 between Ocon and Bearman, with Bearman’s afternoon session interrupted by an electrical issue before he returned under the lights.
The day closed with a full race start simulation. All cars returned to the pit lane, completed two formation laps and lined up on the grid. The new pre-start warning sequence ran without issue. No stalls. Clean execution across the field.
Tyres & Data Picture
Beyond the headline lap and the reliability issues, compound choice revealed how teams approached the day.
The C3 dominated, accounting for 72% of total mileage with 842 laps completed. C2 covered 227 laps at 19%. C1 saw just 48 laps, or 4% of the day’s running. In distance terms, that translates to 259 kilometres on C1, 1,228 on C2 and 4,556 on C3. The emphasis on C3 mirrors Week One and suggests teams are still working in a narrow performance window rather than expanding into race-style running.
The five quickest laps of the day were all set on C3, in conditions closely matching those seen across the first test. Unlike Week One, teams had access to 24 dry tyre sets from the full compound range, yet the preference remained firmly at the softer end.
C4 saw limited use, primarily in the closing hours as track temperatures dropped. McLaren, Red Bull and Williams used it for performance runs, combining for 47 laps. No team ran the C5.
Piastri set the fastest time on both C4 (1:33.641) and C2 (1:34.067). Russell posted the C1 benchmark at 1:37.094. The pattern suggested set-up exploration over long-run simulation.
Track temperatures peaked at 44°C. Ambient air ranged from 24°C to 31°C, slightly cooler than the equivalent Friday session in Week One.
Coffee Corner Take
Russell on top. Mercedes bringing updates that seem to work. That is a solid platform heading into the final two days.
But the headline lap is not the story I keep coming back to.
Hamilton losing his afternoon is a problem Ferrari did not need on Day 1 of the final test. Forty-four laps is not a programme. They needed that time. Leclerc was positive on the prototype compound in the morning, which is encouraging, but Ferrari now head into Thursday with one driver short on mileage before the season opens.
Aston Martin? Fifty-four laps. Power unit issue, red flag, beached car. That is not a testing day, that is damage limitation. Last week it was pace; this week it is reliability and mileage. At some point the problems stop being bad luck and start looking like a pattern.
Hadjar deserves credit. Thirteen laps in the morning, car issue fixed, came back and posted a competitive time in the afternoon. Red Bull managing the situation quietly, as they tend to. Verstappen returns tomorrow. That will be worth watching.
Russell’s 76 laps also matter. Mercedes arrived saying every lap is precious, and they meant it. Antonelli and Russell delivered 147 between them and the car held together. After Week One’s disruption, that is exactly what they needed.
Even the compound spread told the same story. Teams are still refining set-up rather than committing to long runs. The window to change that is closing.
Three days left before it actually counts. Some teams are building. Some are still firefighting.
The gap between those two groups is starting to show.
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