FRANKFURT—Mercedes-Benz sold 2.31 million passenger cars last year, likely enough to make it the top-selling premium automotive brand in 2018, although some analysts are questioning how much longer German manufacturers can dominate the luxury car industry.
BMW, Audi, and Daimler-owned Mercedes-Benz have held sway in the market for high-performance limousines for decades, but analysts warn a shift toward electric and self-driving cars could open the door to new challengers, such as U.S. manufacturer Tesla.
