The bmw m4 is being reviewed by various outlets, with some finding it to be a thrilling drive, comparable to the m3, but lacking in practicality and affordability. Reviews of different m4 models, including the competition and csl, have yielded mixed reactions, with some testers expressing conflicted or saddened opinions. The overall assessment of the m4's performance and driving experience appears to be positive, but its appeal may be tempered by its limitations.