G20 GDP growth slowed slightly to 0.7% in the second quarter of 2026 (Q2 2026), down from 0.8% in the prior quarter (Q1 2026), according to provisional OECD estimates published in September 2026, with most member economies posting weaker results. Saudi Arabia’s contraction deepened sharply, with GDP falling -4.8% in Q2 after a 1.4% decline in Q1, driven largely by a steep drop in oil activity. South Africa’s economy