- George Russell reported lingering balance problems with Mercedes’ upgraded W17 during Friday practice at the Mexico Grand Prix, warning the car remains outside its ideal performance window.
- Ferrari’s Charles Leclerc led both Friday sessions, assisted by the SF-26’s smaller turbo setup coping effectively with Mexico City’s high altitude.
- Mercedes deputy team principal Bradley Lord characterized the day as solid, emphasizing ongoing work to manage cooling, turbos, and tire wear ahead of qualifying and the race.
Mercedes Struggles to Extract Upgraded W17 Performance in Mexico
Mercedes Formula 1 driver George Russell has voiced renewed concerns over the balance and setup flexibility of the updated W17 package following Friday practice at the Autodromo Hermanos Rodriguez. Although Russell concluded the second practice session in third place—finishing only a tenth of a second adrift of Ferrari pacesetter Charles Leclerc—the British driver indicated that the Silver Arrows remain far from confident with their baseline package.
The championship-leading outfit initially introduced its latest aerodynamic and technical upgrade package for the race in Malaysia, where they fell behind Red Bull’s Max Verstappen. A similar deficit emerged in Singapore before teammate Kimi Antonelli temporarily halted Verstappen’s momentum by taking victory from pole position in Austin. Russell, by contrast, has navigated a difficult sequence featuring a DNF, a ninth-place finish, and an eighth-place finish across the past three Grands Prix.
George Russell encountered through-corner balance limitations during Friday practice in Mexico.
Balance Limitations and the Operating Window Challenge
Having sat out opening practice while reserve driver Frederik Vesti took over driving duties, Russell stepped into the cockpit for FP2 to find familiar vehicle dynamics issues. Russell pointed to an unforgiving operating window that continues to restrict how hard the drivers can push the machinery.
I think still not fully on top of the new package,
claimed Russell. We see there’s some balance limitations we have that we’re struggling to overcome. I would say currently for Kimi and I, we’re probably more outside the window, similar to what we saw in Malaysia, than inside the window like Kimi achieved in Austin. But hopefully overnight we can get it back there.
When questioned on precisely what areas the team must address overnight to unlock competitive lap times, Russell directly pinpointed corner entry and exit stability: The balance. The through-corner balance isn’t where we want it and the car isn’t quite as together as we’d like it, so yeah it’s going to require a bit of work.
Ferrari’s High-Altitude Advantage and Mercedes Power Unit Management
Charles Leclerc set the benchmark across both Friday practice sessions, validating Russell’s pre-event prediction that Scuderia Ferrari would enter the weekend as the team to beat. The Autodromo Hermanos Rodriguez sits over 2,200 meters above sea level, placing exceptional strain on turbocharger performance due to the thin air. Ferrari’s SF-26 carries a relatively compact turbocharger compared to rivals, minimizing boost lag and yielding improved throttle response out of Mexico’s low-speed corners.
Despite the setup hurdles, Mercedes management insists there is no reason for alarm. Deputy team principal Bradley Lord highlighted that Leclerc also swept Friday practice at Circuit of the Americas, only for Antonelli to control proceedings across the remainder of the race weekend.
Solid day for us, I’d say – not spectacular, but solid,
said Lord. There’s a lot of challenges here with PU cooling, with brake cooling, with boost management with these turbos, now that we don’t have an MGU-H to help us out with that as we have done for the last few years. So this is a tricky place to get everything right, to be quick on a single lap, but then also be able to maintain your pace for the long run. So we’ve answered a few of those questions. We’ve got a bit more digging to do through the data to find exactly the best compromise for tomorrow and Sunday.
Why This Matters
Getting the updated aerodynamic floor and bodywork package into its optimal window is pivotal for Mercedes as the constructors’ championship battle tightens in the season’s closing stages. The operational hurdles encountered in Malaysia and Mexico demonstrate that while the W17 is capable of race-winning pace—as displayed by Antonelli at the United States Grand Prix—it remains highly sensitive to track layout, altitude, and mechanical balance. Mercedes must rapidly reconcile its data ahead of qualifying to preserve its margin over Red Bull and fend off an ascending Ferrari threat.
Frequently Asked Questions
Why is high altitude such a challenge for the F1 cars in Mexico?
The thin air at Mexico City’s circuit reduces aerodynamic downforce and significantly complicates power unit and brake cooling. Furthermore, turbochargers must spin faster to compensate for lower air density, making turbo design and boost management critical to avoiding excessive lag.
Who drove for Mercedes during Free Practice 1 at the Mexico Grand Prix?
Frederik Vesti drove George Russell’s car during Friday’s opening practice session before Russell resumed his regular driving duties for Free Practice 2.
How has George Russell performed since Mercedes introduced its upgrade package?
Russell has endured an inconsistent run with the upgraded car across the last three events, recording a retirement (DNF), a ninth-place finish (P9), and an eighth-place finish (P8) while struggling with corner balance and setup window sensitivity.
