Ferrari’s edge in the 2026 Formula 1 title fight has increasingly come from reliability, with Lewis Hamilton saying the team’s consistency has become one of its biggest advantages as Mercedes continues to battle engine and battery problems that could yet lead to grid penalties. Hamilton said Ferrari’s processes, pit stops and factory preparation had helped it stay more dependable than Mercedes, though he stressed that no penalty outcome had been confirmed for his team. Current component usage shows the teams are tied on key power unit parts, with Ferrari having used more MGU-K units and Mercedes more exhaust components.

That reliability gap showed again at Silverstone, where Charles Leclerc led Ferrari to victory in the British Grand Prix after the team’s upgraded power unit, introduced in Austria, appeared to improve its competitiveness at a circuit that was expected to suit Ferrari less. Kimi Antonelli had taken pole for Mercedes and was in contention before a broken wheel shield and a track-limits penalty dropped him to 15th. George Russell finished on the podium, helped by the Safety Car and Max Verstappen’s crash, while Ferrari scored 40 points. Ferrari also showed a straight-line speed weakness during the weekend, which Russell and Antonelli both noticed.

Mercedes boss Toto Wolff said the team needed to look at itself after the race and warned Ferrari could remain a serious threat for the rest of the season. Former Formula 1 driver Anthony Davidson said Mercedes’ reliability problems had opened the door for Ferrari to fight for the championship, describing Ferrari’s machinery as bulletproof. Mercedes trackside engineering director Andrew Shovlin said the team was adding performance in smaller steps rather than relying on one major upgrade package, and Hamilton said Mercedes must keep maximizing points and limit damage in races it cannot win as the reliability problems continue to hang over the title battle.

Audi Formula 1 boss Mattia Binotto has urged the FIA to rethink the sport’s Additional Development and Upgrade Opportunities, or ADUO, scheme, warning that its current performance-based rules could be exploited by manufacturers that are already competitive. Binotto said the system relies too heavily on V6 or internal combustion engine performance, even though ADUO upgrades can apply to the full power unit, including hybrid components. He argued that a team with a stronger chassis or overall car could avoid showing the true potential of its engine and still gain extra development time, which runs counter to the scheme’s aim of helping manufacturers that are genuinely behind.

The concern has sharpened after Mercedes received an additional development allowance under the rules, even though its engine has been widely regarded as the strongest on the grid and the team has won seven of the first nine grands prix in 2026. Red Bull Ford Powertrains was treated as the benchmark and was denied extra upgrades beyond the standard homologation timetable, a ruling Red Bull challenged unsuccessfully. Rival manufacturers have also suspected that some teams may be withholding V6 performance to gain an advantage within the ADUO system.

Binotto said the FIA has done important work on the concept but needs to adjust the rules so they better support long-term convergence across the full regulatory cycle. The FIA said the teams agreed to the current process, which uses ICE-based evaluation windows to allocate development opportunities. Under the latest assessment, Mercedes received one upgrade, while Ferrari, Audi and Honda each received two for being about 4% behind Red Bull Ford.