Lando Norris will serve a 10-place grid penalty at this weekend's Belgian Grand Prix after McLaren opted to install a fourth power electronics unit, exceeding the Formula 1 season's permitted allocation. The team decided to make the change to benefit from the latest Mercedes reliability upgrades following a series of technical issues earlier in the campaign.
McLaren believes Spa-Francorchamps is the ideal venue to absorb the penalty because the circuit offers more overtaking opportunities than the upcoming races in Hungary and the Netherlands. Team officials also wanted to ensure Norris has the improved power unit before introducing a major aerodynamic development package over the next two Grands Prix, where track position is expected to be far more critical.
The reigning world champion has endured a frustrating title defence, with McLaren struggling to match the pace of its closest rivals while also battling recurring reliability concerns. Norris retired from the Chinese Grand Prix after a power electronics failure, while replacement components also suffered problems during race weekends in Japan and Monaco, prompting the team to adopt the upgraded specification now available from Mercedes.
McLaren hopes the latest power electronics package will last for the remainder of the season, reducing the risk of further technical setbacks and avoiding additional sporting penalties. The team confirmed the upgraded unit incorporates reliability improvements introduced by Mercedes-AMG High Performance Powertrains after several failures across the season.
Alongside the engine changes, McLaren will debut a revised rear wing at Spa that has been designed specifically for the circuit's high-speed characteristics. Unlike the innovative concepts used by Ferrari and Red Bull this season, McLaren's latest design retains a more conventional drag reduction system, while Red Bull has reportedly abandoned its experimental rear wing after Max Verstappen's recent crashes.
Mercedes-powered teams have continued to face reliability concerns throughout the year, with championship leader Kimi Antonelli also receiving a fresh engine this weekend after issues with his Silverstone unit. However, because the replacement falls within his allocated components for the season, Antonelli will avoid a grid penalty while Mercedes investigates whether the previous engine can be returned to service later this year.
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