With the end of his Formula One career, Hoffmann competed in Formula 2 for Project Four with a Ralt and a March in 1977 and 1978, (which was his last year in Europe).
Co final da súa carreira na Fórmula Un, Hoffmann competiu na Fórmula 2 e no proxecto catro cun Ralt e un March en 1977 e 1978, (que foi o seu último ano en Europa).