The McLaren M2B was the McLaren team's first Formula One racing car, used during the 1966 season. It was conceived in 1965 and preceded by the M2A development car. Designed by Robin Herd, the innovative but problematic Mallite material was used in its construction. The car was powered by Ford and Serenissima engines but both lacked power and suffered from reliability issues.

Driven by team founder Bruce McLaren, the M2B had a short Grand Prix career, entering six races and starting only four. It scored the team's first point at the British Grand Prix and two more points at the United States Grand Prix.

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• ¹ - Webber was due to start second but was demoted five places due to a gearbox change.
• FriP1: McLarens split by Schumacher
• FriP2: Vettel pips Alonso in Montreal
• SatP: Four teams in the top four
• Qualifying: Hamilton storms to Montreal pole
• Race: McLaren one-two in Montreal thriller

• ¹ - Hülkenberg recorded the lap time first.
• ² - Nine drivers were given five-second time penalties post-race for for exceeding the safety car-in lap time. Apart from the drivers listed, Pedro de la Rosa (10th, + 42.414), Vitaly Petrov (11th, + 43.287), Vitantonio Liuzzi (13th, + 45.890) and Nico Hülkenberg (retired) were also given penalties.
• FriP1: Rosberg and Mercedes in front
• FriP2: Alonso pips Vettel in Valencia
• SatP: Red Bulls split by Renault
• Qualifying: Vettel beats Webber to pole in Valencia
• Race: Vettel wins amid drama in Valencia