Across the opening 11 rounds of the 2026 Formula 1 season, Mercedes has been the only consistently strong squad, capitalising on a new era of technical regulations to win eight of the first 11 grands prix. But the performance edge it held in the early rounds has slowly dissipated as rivals introduced regular upgrades — and the development race may ultimately determine whether anyone can stop Mercedes claiming the constructors' championship.

Ferrari's aggressive strategy raises eyebrows

The gains being achieved with update packages are not minor improvements — they are chunks of a second at a time. Ferrari brought 32 upgrades across eight races, with its largest package arriving at the Miami Grand Prix in early May, where 11 components were changed. A further eight-component upgrade followed in Barcelona. The most upgraded car area for Ferrari is the floor and underbody, with 11 developments.

Ferrari's aggressive approach prompted Mercedes team principal Toto Wolff to raise questions about the Italian team's spending under the cost cap, which was increased by $80 million to $215 million for this season.

"We're a little bit surprised that Ferrari can throw these huge updates at the car in the way they do," Wolff said. "In my opinion, they need to be running out of cost-cap money soon, because we can't do that. We simply lack the buffer in the cost cap to be able to bring so many parts in the way they do. Hopefully, that's going to change towards the end of the season. They won't be able to bring any more parts. The logic would say that, and then we're going to come with more."

Ferrari counterpart Fred Vasseur fired back: "I found it quite ironic, coming from Toto and Mercedes. When Red Bull is developing or when Mercedes is developing, they are geniuses. When we are developing, we are cheating."

Vasseur defended the strategy: "It's better to have a couple of tenths for five races than a couple of tenths for the last two." He added that some upgrades are not large packages of new components but rather modifications of existing parts — remaking them from lighter metal, which brings significant lap-time gains even when the aerodynamic benefit is small.

Mercedes' conservative approach

By contrast, Mercedes has introduced just one major upgrade package, which arrived in Canada in late May. The team has relied on its strong baseline car and engine package, but reliability issues have been a persistent thorn. Technical director James Allison confirmed that Russell's Canadian Grand Prix retirement was caused by "a failure in the battery, which just suffered a catastrophic failure a third of the way into the race."

The points lost to reliability are substantial. An estimated 25 points were lost when Russell retired in Canada while leading. Antonelli lost 18 points when an electrical shutdown ended his Barcelona race while running second, and another 18 when a wheel shield failure struck at Silverstone. Russell's anti-stall issue in Hungary cost a further estimated two points.

Aston Martin's massive overhaul

At the other end of the grid, Aston Martin — the 2026 backmarker despite its vast investment, Adrian Newey's design expertise and Honda's engine partnership — brought 16 developments to Hungary in its first major chassis upgrade of the season.

The car arrived late to preseason testing, faced a severe vibration problem that left drivers fearing permanent nerve damage, and suffered from a significant engine-battery shortage. At the Belgian Grand Prix, the slowest Cadillac was over two seconds quicker than the fastest Aston in qualifying.

"The first races have been a complete nightmare," Newey admitted. "We didn't start serious work on the 2026 car until mid-March 2025 and didn't get a model into the wind tunnel until mid-April. That left us several months behind our rivals — and that's a huge gap to close."

The Hungary upgrade focused heavily on weight saving, with Aston remaking aero parts in lighter metal. The team advanced to Q2 for the first time in 2026, though its best qualifying result was still only 16th for Fernando Alonso. A Honda engine upgrade is due at Zandvoort after the summer break. "It's only part of the package," Newey cautioned. "We'll have some more steps in Zandvoort and then further in Monza and Baku."

Williams' struggles and the Baku gamble

Williams has been another major disappointment. Production delays, a missed first test, and an overweight, slow car have tested the faith of drivers Carlos Sainz and Alex Albon in team principal James Vowles' vision.

"A lot of things have been learned, a lot of things we've realised, and unfortunately it has been a bad year so far," Sainz said. Albon added: "We know the weaknesses of the car. This year, the work that's been done at the factory, it's the biggest effort I've seen in the team. Unfortunately, it feels like Aston is going to be faster for the rest of the year now."

Williams is targeting the Azerbaijan GP in late September for its big upgrade — essentially a B-spec car. But Albon has already cast doubt on its effectiveness: "If it's cured by Baku, I doubt it."

Cadillac: Slow progress but real signs of life

F1's newest team, Cadillac, has been "building the plane while flying it," in the words of team principal Graeme Lowdon. The team only received full approval to race in March 2025, and reliability issues — chiefly brake cooling — have been a persistent problem. Valtteri Bottas retired due to brake overheating in Hungary.

"That is a really, really, really difficult area of a Formula 1 car to develop," Lowdon said. "It's an area where know-how and intangible IP is really important. We're not allowed to get that from anywhere else. You have to do that learning and you have to do it in public as well with a few hundred million people watching."

But the numbers are trending in the right direction. Cadillac started the year 3.8 percent off the fastest Q1 time in Australia. That gap dropped to a season-best 1.8 percent in Belgium. More encouragingly, when compared to Williams — a team that scored podiums last year — Cadillac has closed from 1.9 percent off in Australia to just 0.3 percent off in Hungary.

"We know what our development trajectories look like relative to some of the other teams," said Cadillac CEO Dan Towriss. "We know which teams are within reach, and which ones are just doing something different ahead."

The road ahead

With Ferrari now just 72 points behind Mercedes in the constructors' championship, and McLaren closing the gap with its Hungary upgrade, the second half of the season promises an intense development battle. But the cost cap means teams must also decide when to shift focus to their 2027 cars — a fresh development race that will begin all over again.

"Let's see who is investing early on next year," said Red Bull team boss Laurent Mekies, "and who is investing a bit more this year, and who has managed to somehow unlock a bit more capacity to do both."