1]Engine & Transmission:-
1.Under the hood, the 4 Series is available with a variety of engines, including a 2.0-liter turbocharged four-cylinder that produces 255 horsepower and 295 lb-ft of torque, and a 3.0-liter turbocharged inline-six that produces 382 horsepower and 369 lb-ft of torque. 
2.Both engines are paired with an eight-speed automatic transmission and rear-wheel drive, with all-wheel drive available as an option.

2]Safety & Features:-
1.Safety features on the 4 Series include automatic emergency braking, lane departure warning, and blind-spot monitoring. 
2.Optional features include adaptive cruise control, a surround-view camera system, and a head-up display.
3.The current generation of the 4 Series was introduced for the 2021 model year and features a bold, controversial new design with a large, vertical kidney grille that extends all the way down to the front bumper. 
4.The 4 Series also has a longer and wider stance than the previous generation, giving it a more aggressive look.

3]Intrior:-
1.The interior of the 4 Series is luxurious and driver-focused, with a minimalist design and high-quality materials. 
2.Standard features include an 8.8-inch infotainment display with Apple CarPlay and Android Auto compatibility, a 10.25-inch digital instrument cluster, and a power-adjustable driver's seat. 
3.Higher trims offer additional features like leather upholstery, a larger infotainment display, and a Harman Kardon sound system.

4]Overall:-
BMW 4 Series is an excellent choice for drivers who want a stylish and athletic luxury car with powerful engines and advanced technology features. Its controversial design may not be to everyone's taste, but the 4 Series offers a unique and distinctive option in the luxury car market.