4 Series

Sentiment is mixed and heavily dependent on the specific model, engine, and generation. For the F-generation (e.g., 428i, 430i, 435i, 440i), owner feedback is generally positive regarding driving dynamics, styling, and the overall package o

Models equipped with the B58 inline-six turbocharged engine (e.g., 435i, 440i, M440i) receive the most consistent praise for performance, smoothness, and being a "great drivetrain." The M440i with its mild-hybrid system is specifically note