Citroen C4 Cactus Phase 2 PureTech 110 Auto Fuel Consumption (Economy), Emissions and Range Fuel Consumption - Economy - Combined: 44 MPG 5.3 L/100 km 53 MPG UK Citroën C4 Cactus. Retail Network: Citroen + information Book a test drive. Models available. FUEL CONSUMPTION: Consumption mixed cycle (l/100km) Fuel Consumption - Economy Combined: 51 MPG 4.6 L/100 km 61 MPG UK: Citroen C4 Cactus Phase 1 VTi 82 Feel Fuel Consumption (Economy), Emissions and Range. The C4 Cactus Blue HDi 100 manual that we drove is capable of an official combined economy figure of 91.1mpg, equating to 82g/km CO2 – however this is only possible on 15-inch wheels. On 16 or 17-inch wheels, as fitted to our test car, the economy drops to 83.1mpg in both cases, although bizarrely the emissions are different – 87g/km and With its latest-generation small engines meeting the future Euro 6 standard, the production CITROËN C4 Cactus already ranks among the best in its segment with CO2 emissions from 82g/km and fuel consumption starting at just 3.1l/100 km. The C4 Cactus AIRFLOW 2L concept goes even further by adopting the Hybrid Air drivetrain. What is the fuel economy, Citroen C4 Cactus (Phase II, 2018) 1.5 BlueHDi (120 Hp) EAT6? 5 l/100 km 47.04 US mpg 56.5 UK mpg 20 km/l: Replacement: fuel filter – CITROËN C4 CACTUS. Tip from AUTODOC experts: Ensure adequate ventilation of the workplace. Fuel vapors are poisonous. Please note: all work on the car – CITROËN C4 CACTUS – should be done with the engine switched off. Citroen C4 Cactus Phase 1 PureTech 82 Fuel Consumption (Economy), Emissions and Range. Fuel Consumption - Economy - Combined: 51 MPG 4.6 L/100 km 61 MPG UK: qUq4e.