The 2018 BMW M3 is part of the model's fifth-generation, offering a potent mix of performance, style and comfort. This high-performance 4-door sedan's heart is a 3.0-liter twin-turbo inline-6 engine, capable of producing 425 horsepower, with Competition Package variants pushing this to a hefty 444 horsepower. The standard transmission is a 6-speed manual, and a 7-speed dual-clutch automatic is optional. Rear-wheel drive is the norm across all models. Inside, you'll find a 8.8-inch infotainment screen with BMW's iDrive system, Apple CarPlay, and a 16-speaker Harman Kardon sound system. Safety features include front and rear parking sensors, adaptive brake lights, and advanced vehicle and key memory. BMW made no major changes to the M3 for the 2018 model year.