In what was meant to be a season of redemption, Mercedes has fallen short of consistently competing at the top, despite securing four wins. The W15 has proven to be a fast car but only under specific conditions, struggling with bouncing and rigid setups in other Grands Prix. Expanding its operational window is the team’s primary goal.
After a 2023 season marked by ups and downs, Mercedes hoped that 2024 would be a year of resurgence, especially following a technical and organizational reshuffle that saw James Allison return to lead the car’s development.
Instead, this season has also been highly inconsistent, with moments of promise overshadowed by frustrations—especially given that McLaren and Ferrari have grown stronger, battling for the Constructors’ Championship until the final race. McLaren, in particular, stands as a testament to how customer teams can rise to prominence with the right ingredients, proving that a return to the top is achievable.
However, mixing those ingredients correctly remains a challenge, and it’s no secret that Mercedes has yet to find the right formula to compete consistently at the top in 2024. The W15 has shown glimpses of competitiveness, particularly mid-season, but has often lacked the consistency needed to challenge the leading teams. This reflects the limitations of its narrow operational window.
This narrow window is perhaps the defining element of the W15’s season. The car is not inherently slow—its intermittent flashes of brilliance have shown that Mercedes can shine under the right circumstances. However, from a technical standpoint, sporadic performance is not enough to return to championship contention and begin a new golden era. Mercedes, which dominated the sport before the introduction of ground-effect cars, aims for nothing less.
A Slow Start Due to Bouncing
Pre-season testing had generated cautious optimism within Mercedes, with expectations of competing at least as the second-best team. James Allison even placed the W15 ahead of Ferrari’s SF-24. Like Ferrari, Mercedes had reworked several aspects of its technical concept, making the early races a crucial indicator of the season’s direction.
In Bahrain, despite overheating issues caused by a too-tight engine cover, the W15 occasionally competed with Ferrari for podium spots before fading mid-race due to high temperatures. This early battle, however, proved fleeting. Just one week later, on a completely different circuit in Saudi Arabia, the W15’s weaknesses became apparent—specifically its struggles with bouncing in corners.
While Bahrain’s track characteristics masked some issues, Saudi Arabia exposed the car’s unpredictability, particularly in fast corners. This forced the team to choose between two compromises: either battle the bouncing and sacrifice driver confidence or raise the ride height and lose aerodynamic downforce.
The first part of the season was plagued by these issues. Aside from a second-place finish by Lewis Hamilton in the Chinese Grand Prix sprint race—thanks more to his wet-weather qualifying skills than the car’s performance—Mercedes found little satisfaction in the opening rounds of the championship.
A Mid-Season “Rebirth”
Mid-season upgrades brought some hope. A lighter floor better suited to managing bouncing, along with a new front wing that improved front-end downforce, gave the W15 a second wind. Although it never became the fastest car, its ability to capitalize on rival teams’ mistakes marked a turning point.
The Austrian Grand Prix exemplified this shift. Competing with Ferrari for the title of the third-best team, Mercedes managed to outmaneuver a struggling Ferrari to secure its first win of the season.
Similar scenarios played out in Britain and Belgium. Despite McLaren’s potential to win both races, the Woking-based team failed to maximize its opportunities, allowing Mercedes to seize the moment. This opportunism characterized Mercedes’ mid-season: with a car closer to the front and consistently the third-best, the team capitalized on rivals’ errors to secure strong results.
The Belgian Grand Prix, however, highlighted a critical turning point. While the team initially celebrated a one-two finish—later marred by Russell’s disqualification due to an underweight car—the updates introduced at Spa revealed limitations. The new floor reintroduced bouncing, leading to its shelving until after the summer break. Meanwhile, rival teams continued to develop their cars, leaving Mercedes struggling to keep pace.
The Austin Paradox
The situation improved slightly in Austin with the introduction of the final upgrade package of the year. However, the problems persisted, showcasing both the W15’s potential and its limitations. The updates aimed primarily at adding downforce and improving overall performance rather than solving the car’s fundamental issues.
Extracting that downforce, however, was often challenging due to the persistent bouncing, which undermined driver confidence. Hamilton, in particular, suffered from this unpredictability, resulting in lackluster qualifying performances, especially in medium- and high-speed corners. This was evident in Austin, where his race ended early due to a spin, as well as in Mexico and Brazil, where he failed to progress beyond Q1. Russell adapted better to the car’s quirks, but even he struggled with the W15’s nervous handling.
In the final three races of the season, Mercedes showed a surprising resurgence, returning to contention for top positions. Cooler temperatures helped mitigate rear tire overheating—one of the W15’s critical weaknesses—while smooth asphalt in Las Vegas, Qatar, and Abu Dhabi allowed the team to lower the car’s ride height, a setup preference that maximized aerodynamic downforce.
In Las Vegas, quick tire warm-up in cold conditions played to the W15’s strengths. In Qatar, a more suitable setup enabled the car to excel in fast corners. While these performances confirmed the W15’s potential under ideal conditions, they also underscored its narrow operational window, which prevented it from being a consistent threat.
The car’s lack of versatility further highlighted its struggles. At times, it performed better in slow sections, often due to softer setups forced by technical constraints. Conversely, when bouncing was mitigated or low, stiff setups were possible, the W15 excelled in fast corners but struggled in slower sections.
This contrasts with the McLaren MCL38, a car with greater aerodynamic and mechanical versatility, capable of performing well without overly rigid setups. For the W16’s design, several key areas demand attention, starting with managing bouncing—a recurring issue throughout this regulatory cycle for Mercedes.
Expanding the operational window is a top priority, not only for performance but also because the W15 has proven to be a nervous, unpredictable car that limits driver confidence and, by extension, results. Additionally, better rear-end management is crucial, as excessive thermal degradation of the rear tires has repeatedly hindered performance.
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