The BMW 4 Series is a line of compact luxury cars introduced by BMW in 2013, evolving from the BMW 3 Series Coupe. It’s distinguished by its sportier, more aggressive design and is available in various body styles including a coupe, convertible, and Gran Coupe (a four-door coupe). Here are some key aspects of the BMW 4 Series:

1. Design: The 4 Series showcases a dynamic and sleek design, featuring a low-slung body, BMW’s iconic kidney grille, and distinctive headlights. The coupe and convertible models are two-door, while the Gran Coupe offers the practicality of four doors.
2. Engine Options: The 4 Series comes with a range of turbocharged engines, including four-cylinder and six-cylinder variants. These engines are celebrated for their blend of performance and efficiency. High-performance M variants, like the M4, offer even more power.
3. Drive Systems: Available with either rear-wheel drive (RWD) or BMW’s xDrive all-wheel-drive system, the 4 Series caters to different driving preferences and conditions. xDrive enhances traction, particularly in challenging weather.
4. Interior and Technology: The interior of the 4 Series is premium and driver-focused, equipped with the latest technology and infotainment systems. This includes a central touchscreen display and a digital instrument cluster.
5. Variants: BMW offers a variety of models and trims in the 4 Series lineup, such as the 430i, 440i, M440i, and the high-performance M4. These variants cater to a wide range of power, luxury, and performance preferences.
6. Driving Dynamics: BMW vehicles are known for their exceptional driving dynamics, and the 4 Series is no exception. It typically offers precise handling, responsive steering, and a comfortable ride, appealing to driving enthusiasts.
7. Convertible Option: The 4 Series Convertible includes a retractable hardtop or soft-top roof, providing the versatility of open-air driving.
8. Safety and Technology: The 4 Series is equipped with various safety features and driver assistance systems, enhancing overall safety and driving convenience.
9. Customization: BMW offers several optional packages and accessories, allowing buyers to tailor their 4 Series to their specific preferences, be it in performance, luxury, or technological enhancements.

The BMW 4 Series is designed for those seeking a balance of sportiness and luxury in a compact car format, popular among drivers who desire strong performance coupled with comfort and refinement.