Looking back, there really was a time when mass production didn’t mean cheap and replaceable. The E28 was a stalwart of European engineering from day one. But today, the Renner Projekt 5 is captivating the imagination of enthusiasts and collectors — both old and young — of what a four-door sports car can look and feel like. This re-imagined E28 preserves its original simplicity but delivers a whole new world of performance and technology for the modern age.