McLaren's Mercedes battery woes continue as Norris hits limit

McLaren's Lando Norris is down to his final permitted Mercedes battery pack for the 2026 season after another failure, putting him at imminent risk of a grid penalty just three races into the championship. The issue, discovered before final practice at the Japanese Grand Prix, follows a similar problem that forced both Norris and teammate Oscar Piastri to miss the Chinese GP, highlighting a concerning reliability trend for the team.

Why it matters:

With only three battery packs allowed per car per season under the current regulations, McLaren is already on the brink of a costly penalty. This recurring hardware problem not only threatens their championship points but also severely compromises crucial track time needed to optimize the new car's complex energy management systems, putting them at a strategic disadvantage against rivals.

The details:

• The latest failure occurred on the same 'Hertz module' component that caused the double-DNF in China, forcing a third battery pack to be fitted to Norris's car for the Suzuka weekend.
• Team Principal Andrea Stella confirmed the failed China-spec battery is a total loss, and the Suzuka unit is under investigation for a potential repair to avoid burning the final allocated component.
• Compounded Track Time Loss: Norris's weekend was further hampered by a hydraulic leak that sidelined him for FP2, meaning he entered qualifying with minimal high-fuel running and no continuous laps.
• Despite the setbacks, Norris qualified fifth—his best of the season—just 0.004s behind Ferrari's Charles Leclerc, while Piastri qualified fourth.
• Stella attributed McLaren's improved relative performance at Suzuka, particularly closing the gap to Mercedes and Ferrari, to better "exploitation of the power unit" through collaborative work with engine supplier HPP (Mercedes HPP).

What's next:

McLaren faces a race against time to diagnose and fix the root cause of these battery failures. A repaired Suzuka pack would buy critical breathing room.

• Norris acknowledged that missing practice is more costly than ever with the 2026 cars, as drivers need laps to perfect the intricate balance of energy harvesting and deployment.
• Stella remains cautious about race pace, expecting Ferrari to hold an advantage and Mercedes to perform strongly, indicating that qualifying performance may not fully translate on Sunday.
• The team must navigate the next 19 races with zero margin for error on Norris's side of the garage, making every future component decision high-stakes.