What kind of vehicle is the 2024 BMW 4-Series? What does it compare to? BMW’s 4-Series is a counterpart to the 3-Series sedan, available in coupe, convertible, and fastback variations. Rivals include the Audi A4 and A5 as well as the Mercedes C-Class. Is the 2024 BMW 4-Series a good car? Yes, though exterior styling may be polarizing. The...