Worldwide, the top models are Tesla Model Y, Toyota RAV4, and Toyota Corolla, all pretty close together (in 2024 it was 1.09 million Y, 1.08 million Corolla, 1.02 million RAV4 [1]). Sources for 2025 have the same 3 at the top in a close spread, with some disagreement over the exact order.

When you look at brands rather than models then it is no contest. For 2025 the top 15 was Toyota with 11.3 million sold, VW with 9.0, Hyundai Kia at 7.3, GM at 6.2, Stellantis at 5.6, Ford at 4.6, BYD at 4.6, Honda at 3.5, Suzuki at 3.3, Nissan at 3.2, Geely at 3.0, Changan at 2.9, BMW at 2.5, Renault at 2.4, and Mercedes at 2.2.

[1] https://www.statista.com/statistics/239229/most-sold-car-mod...