“New data from JATO Dynamics has revealed that in the first quarter of 2023 the Tesla Model Y is the best-selling car in the world, selling 267,200 in the first three months of the year, eclipsing Toyota Corolla’s 256,400 sales.”
The headline says 2023 and the data covers one quarter. The Model Y beat the Corolla by 10,800 cars in three months. Nine months of Corolla sales are still to come. Calling the year in May is a press release, not a ranking.