It really hasn't been one of the Big 3 since 2014 when Fiat purchased Chrysler and Chrysler became a European company. Big 3 refers to American automakers. Tesla has been the 3rd largest American automaker for over a decade.
If we limit it to American automakers though it should probably no longer be the Big 3. It should be the Big 2. In 2024 GM had 17% of US car sales, Ford had 13%, and Tesla had 4%.
I wonder what it would look like if we included non-US companies but only counted their US sales of cars that were built in the US (and excluded cars from GM, Ford, and Tesla that are not built in the US)? A bit of searching failed to turn up anything useful.
If we forget about where the company is from and just look at the top brands, it is not clear for what N it makes sense anymore to talk about a "Big N". The top 10 are, in order, GM, Toyota, Ford, Hyundai, Honda, Stellantis, Nissan, VW, Subaru, and Tesla. Their shares of 2024 sales were 17, 15, 13, 11, 9, 8, 7, 4, 4, and 4%.
