Mercedes explored flexible wing technology as a solution to persistent handling problems during Formula 1’s ground-effect era, but the subsequent FIA regulatory crackdown forced the team into an unexpected period of adaptation. Trackside engineering director Andrew Shovlin has disclosed how the German manufacturer turned to innovative aerodynamic flexibility to address slow-corner weaknesses, only to face stricter tests that disrupted their development trajectory mid-season.
Struggling with slow-corner rotation and tyre management
The eight-time constructors’ champions encountered significant difficulties extracting performance from their machinery in tight technical sections throughout recent campaigns. Shovlin explained that the W15’s inability to rotate effectively in low-speed corners created a cascade of secondary problems that extended beyond simple handling characteristics.
“Over the last couple of years, we were struggling to get the car to turn effectively in slow corners,” Shovlin revealed. The knock-on effect proved particularly troublesome for rear tyre temperature management, as drivers compensated for the sluggish rotation by applying throttle earlier in corner exits—a technique that generated excessive thermal stress on the rear Pirellis.
This operational challenge pushed Mercedes engineers toward an unconventional development direction: permitting controlled flexing in the front wing assembly. The approach delivered measurable gains by improving low-speed agility whilst maintaining high-speed stability, creating a more balanced aerodynamic platform across varied corner types.
How the FIA’s Barcelona tests changed everything
The governing body introduced progressively stricter load tests on wing assemblies throughout the season, with the most significant regulatory tightening arriving at the Spanish Grand Prix in Barcelona. These new deflection limits fundamentally altered what teams could achieve with their aerodynamic philosophies.
For Mercedes, the timing proved particularly disruptive. The team had invested substantial development resources into optimizing performance around a flexible front wing concept that suddenly fell outside acceptable parameters. “It took us a bit of time to adapt after those rules came in at Barcelona,” Shovlin acknowledged, describing a period where the team’s competitive position suffered as engineers scrambled to recalibrate their aerodynamic approach.
The impact varied dramatically across the grid. Pre-race speculation suggested McLaren would suffer most from the enhanced scrutiny, yet the Woking-based squad maintained its competitive edge. Mercedes, by contrast, faced genuine setbacks that required fundamental reassessment of their aerodynamic philosophy and suspension kinematics.
Learning from McLaren’s suspension geometry
The regulatory disruption forced Mercedes to study competitors’ solutions more closely. Shovlin revealed that McLaren’s rear suspension configuration caught particular attention from Brackley’s technical staff.
“When you’re not the quickest car, you look at who is and what they’re doing,” Shovlin stated. The analysis focused on McLaren’s anti-lift geometry—a suspension characteristic that helps maintain minimum ride height through corner mid-phases, maximizing aerodynamic downforce when lateral loads peak.
This investigation highlighted how different technical routes could achieve similar performance outcomes. Where Mercedes had pursued aerodynamic flexibility, McLaren extracted corner speed through mechanical platform control—an approach less vulnerable to regulatory intervention on wing deflection limits.
Reflecting on the ground-effect transition challenges
The flexible wing episode represents just one chapter in Mercedes’ broader struggle to master Formula 1’s current technical regulations. After dominating the hybrid era’s opening phase with eight consecutive constructors’ titles from 2014 through 2021, the team stumbled badly when ground-effect aerodynamics returned in 2022.
Shovlin stopped short of claiming Mercedes “underestimated” the regulatory shift, but conceded the organisation failed to allocate sufficient resources to critical areas. “We clearly didn’t put enough effort into carrying over the strengths of the 2020–2021 cars,” he admitted, referencing the exceptional through-corner balance that characterized their championship-winning machinery.
The zero-pod concept that Mercedes championed in 2022 proved particularly susceptible to porpoising—the violent aerodynamic oscillation that plagued multiple teams. While rivals addressed the phenomenon and moved forward with development, Mercedes spent valuable time understanding fundamental problems with their design philosophy.
Current competitive landscape and 2026 preparations
Today’s Formula 1 grid demonstrates unprecedented competitive convergence in absolute corner speeds. Shovlin notes that performance differentiation now hinges on how well each car’s balance characteristics suit specific circuit layouts rather than outright mechanical or aerodynamic superiority.
This reality places premium value on adaptability and setup optimization—areas where Mercedes historically excelled but struggled to exploit fully during their ground-effect difficulties. The team’s recent upturn in form suggests they’ve finally addressed the fundamental weaknesses that cost them two constructors’ championship battles to Red Bull Racing.
Looking ahead to the 2026 regulation changes, which will introduce dramatically revised power units and chassis specifications, Shovlin acknowledged substantial work remains. However, he described the impending transition as “less daunting than a month ago”—suggesting Mercedes has established technical foundations that should translate more effectively into the next regulatory cycle than their 2022 transition managed.
The lessons learned from flexible wing development and subsequent regulatory adaptation may prove valuable as Formula 1 enters another period of technical upheaval, where anticipating rule interpretations will determine which manufacturers emerge strongest from the reset.
