No summer is complete without a trip to... 📸 armandrosalie #BMWRepost The BMW 420i Convertible. #THE4 #BMW #4Series BMW 420i Convertible. Mandatory information according to German law ’Pkw-EnVKV’ based on WLTP: energy consumption combined: 6,9 l/100 km; CO₂ emissions combined: 158 g/km; CO₂ class(es): F.