Barcelona 2026: The mileage wars begin but who survived F1’s new-era shakedown?

Barcelona 2026 Shakedown, Week 1 Report

(First proper on-track look at the all-new 2026 era and why the lap counter mattered more than the stopwatch.)

The first official multi-team running of the 2026 rules era is in the books at Circuit de Barcelona-Catalunya, and it looked exactly like a “first test of a new world” should: long runs, calibration work, energy-management learning, and just enough gremlins to remind everyone that these cars and power units are effectively clean-sheet projects.

If you’re looking for a single takeaway, it’s this: lap times were always going to be noise in cold, private running, and teams weren’t chasing performance. Even the insiders were blunt about it.

So the real leaderboard was mileage and on that front, a few stories stood out immediately.

What we learned

Mileage is the new “first impression”

The 2026 package is a bigger operational jump than a normal regulation refresh (new chassis philosophy and new power unit behavior with far greater reliance on the electrical side). The sport remembers how ugly the first hybrid tests were in 2014; this week was calmer and that’s a win.

Energy management and drivability are already a theme

Multiple teams openly framed their shakedown priorities around understanding how to extract performance through new “modes” and energy use, not chasing lap time. McLaren’s debrief, for example, basically reads like a reminder that the “PU and energy” system is now the car’s operating system and everyone’s still learning it.

The “reliability winners” banked an advantage you can’t see on timing screens

When you finish your three-day allocation with big lap counts, you’re not just proving parts survive, you’re feeding correlation, set-up understanding, tire behavior, and driver confidence. That compounds hard heading into Bahrain and the season start in Melbourne.

Team-by-team talking points

Mercedes: the benchmark shakedown

The cleanest story of the week was Mercedes’ sheer volume and smoothness: 500 laps, split across three days, with a program that quickly progressed from “systems check” to more representative longer work.

That doesn’t guarantee pace but it’s exactly how you earn the right to chase pace next.

Ferrari: quietly strong… and quickest

Ferrari didn’t shout about it, but it stacked up big mileage and ended the week with the fastest lap

Even if times are “don’t-care”, the bigger signal is that Ferrari looked like it had fewer early-week headaches than many rivals and the Ferrari-engine mileage across teams was hefty.

Red Bull: the first “manufacturer era” steps looked solid

The headline here is competence: a new-era car, a new-era PU identity, and enough running to start learning rather than firefighting. The mood from the team was positive-but-cautious, proud of the first steps while acknowledging it’s early days.

McLaren: a delayed start, then productive running with one useful warning sign

McLaren arrived a day later and had to compress its work into three straight days. A fuel system issue curtailed one day’s running (Piastri limited to 48 laps that day), but the team still finished with a respectable total and a clear “we’ve got homework” tone about mastering the new PU’s demands.

Haas: a classic shakedown shape

Haas lost time to an issue serious enough to require replacement parts flown in, but it rebounded strongly (including a big-lap-count Friday morning for Bearman) and still ended up near the top of the mileage chart.

Alpine: strong volume and a “serious program” feel

Alpine’s week read like a team intent on de-risking its season: lots of laps, plenty of long-run style work, and a notably high single-day contribution from Gasly earlier in the week.

Racing Bulls: pace flashes, but stoppages that cost rhythm

Racing Bulls looked lively on the stopwatch at times, but the bigger story was interruptions as both drivers suffered stoppages that triggered red flags, exactly the kind of thing that prevents you from building clean operational learning.

Audi: early power-unit/installation pain

Audi’s own round-up effectively confirms what the paddock chatter said: day one problems cost significant time, and the week was about climbing out of that hole.

Autosport was more direct: “power unit gremlins” limited the early running, before a stronger final day.

It’s not a disaster but it’s the kind of “new manufacturer” story you watch closely heading into Bahrain.

Cadillac: a functional first week, but it looked like a true newcomer program

The rookie operation hit the expected early bumps (including an off), and the mileage reflects a team still building its baseline processes.

Aston Martin: the big red flag of the week with late arrival and almost no laps at first

This was the session’s most obvious “uh-oh”: Aston arrived late, managed just four laps before stopping on track, and ended the test with only 65 laps total.

Given this is also the first major on-track validation of a design associated with Adrian Newey, the lack of running is doubly painful: fewer laps means fewer answers but the design of the new car has all the tongues wagging.

Williams: the only team with nothing to show on the lap counter

Williams did not attend, meaning zero mileage from the most important “learn your car” week of the winter.

That’s not season-ending but it’s a real handicap in an era where correlation and systems learning are everything.

The mileage scoreboard (laps, miles/kilometers, and who did them)

Who has the upper hand after Test 1?

Mileage winner: Mercedes

This is the clearest call. Mercedes didn’t just top the table it topped it by a lot, and did so while looking operationally calm. If 2026 is about building understanding quickly, Mercedes banked the most learning.

Reliability outlook

• Best early signals: Mercedes, Ferrari, Red Bull all with big mileage and comparatively little drama visible from the outside.
• “Mostly fine, but note it” tier: McLaren (fuel system interruption), Haas (midweek issue but recovered), Racing Bulls (stoppages disrupted flow).
• Biggest questions heading to Bahrain: Audi (day-one technical problems consistent with new PU integration pain), Aston Martin (simply nowhere near enough running).

Pace (the least trustworthy metric but we can still hint)

If you must read tea leaves, Ferrari and Mercedes sat at the top of the (meaningless) headline times, with McLaren in that conversation too.

But with teams explicitly prioritizing mileage and systems learning and multiple programs disrupted by weather/allocations, I’d treat “pace ranking” as a placeholder until Bahrain.

Bottom line

The new era’s first public truth is brutally simple: the teams that ran the most have already learned the most. Right now, Mercedes leaves Barcelona with the clearest early edge on mileage, Ferrari looks like the closest “no-drama” rival, and Audi/Aston have the biggest reliability homework before the next test window.