A 503-horsepower crossover seems a little absurd when you think about it. After all, how quickly does one really need to get to Starbucks? However, the all-new 2020 BMW X3 M Competition and X4 M Competition are not your ordinary caffeine-bound crossovers. The engineers at BMW M are no strangers to the company's SUVs line: they arrived on the scene in the high-caliber SUV segment with the launch of the BMW X5 M in 2009. At the time it was the most powerful SUV in the segment with 547 HP, able to beat the competition with ease.