Different generations, same thrill. #BMW #BMWM #MPerformance Paint finish shown: Frozen Deep Green metallic. BMW Z4 M40i Roadster. Mandatory information according to German law 'Pkw-EnVKV' based on WLTP: energy consumption combined: 8.4-8 l/100 km; CO₂ emissions combined: 197-181 g/km; CO₂ class(es): G.