Mexico City is widely cited as having the largest taxi fleet in the world, with over 140,000 registered "taxímetros" roaming its streets. The city's iconic pink and white (formerly gold and maroon) taxis are a vital part of the metropolitan transport fabric, serving a population of over 21 million people. Other cities with massive taxi populations include Mumbai, which has nearly 60,000 black-and-yellow "Kaali-Peeli" taxis, and Bangkok, known for its thousands of brightly colored pink, orange, and green cabs. While New York City is famous for its yellow cabs, it actually has a smaller fleet of roughly 13,500 medallions, though the total number of vehicles for hire (including Uber and Lyft) in NYC exceeds 100,000. In 2026, the landscape is shifting as cities like Dubai introduce massive fleets of autonomous air taxis and electric vehicles, but in terms of sheer volume of traditional street-hailed cars, Mexico City remains the reigning champion of the global taxi industry.