Citroen in Paris presented the C4 Cactus AIRFLOW 2L Concept. The concept C4 Cactus has an average fuel consumption of just 2 liters/100 km, and has a front bumper with three air intakes, which open and close automatically to cool the engine, but also to improve aerodynamics.
The car features a large rear spoiler, 19 inch alloy wheels, with active aerodynamic elements and low rolling resistance tires, the side mirrors are replaced by cameras in an effort to improve aerodynamics, which is 20% better than the Citroen C4 Cactus.
The weight has been reduced by 100 kg, due to the use of aluminum, composites and high-strength steel, with the car driven by the Hybrid Air hybrid system as the Peugeot 208 HYbrid Air 2L Concept. This consists of a three-cylinder 1.2 liter gasoline engine, a compressed air system, a hydraulic motor and an automatic gearbox. More details are not announced by PSA except that the engine has three modes, one that only uses gasoline, using only air and on using both. When the car is driven in the city, the Air mode helps it have zero CO2 emissions and zero fuel consumption.
The Citroen says that the compressed air tank can be filled either when the driver is moving at slow speeds, or using the energy developed by the three-cylinder petrol engine. Regardless of the method, the tank reaches the maximum pressure in just 10 seconds.