In the five years since the Leaders of the Group of Twenty (G20) first met, the G20 has become the premier forum for global economic policy coordination. The question is whether the G20 can maintain and even strengthen its role in the future and how it can achieve this. This Economic Brief argues that the G20 has moved from an initial high performance equilibrium to a lower one, which nevertheless continues to deliver important public goods. However, in order to remain relevant, the G20 needs to define more precisely where and how policy coordination and cooperation at international level can be effective in fulfilling the G20's overarching objective of achieving strong, sustainable and balanced growth at the global level. The Economic Brief provides some suggestions in this regard.