By comparing actual fuel consumption based on user reports, Peugeot 2008 consumes 1.6 litres more fuel per 100 km than the Citroen C4 Cactus. Fuel tank capacity: 50 litres: 50 litres: Full fuel tank distance: 1020 km in combined cycle: 1420 km in combined cycle: 1160 km on highway: 1470 km on highway: 760 km with real consumption: 1020 km with By comparing actual fuel consumption based on user reports, Citroen C3 consumes 0.1 litres less fuel per 100 km than the Citroen C4 Cactus. Fuel tank capacity: 45 litres: 50 litres: Full fuel tank distance: 910 km in combined cycle: 940 km in combined cycle: 1070 km on highway: 1080 km on highway: 680 km with real consumption: 740 km with real 0K5Qg.