The 2025 BMW X3 M40i is the performance-oriented variant of BMW's best-selling compact SUV, featuring a 3.0-liter turbocharged inline-six with mild hybrid technology producing 382 horsepower and 398 lb-ft of torque. The redesigned fourth-generation X3 brings a bold new design language, BMW's latest iDrive system with a curved display, and a more spacious interior. With xDrive all-wheel drive, adaptive M suspension, and a 0-60 time of 4.4 seconds, it offers sports car thrills in a practical SUV package.