*4.2. CED*

The highest energy consumption was recorded at the use-stage of the car tire life cycle. The most likely explanation for this observation is that setting the car in motion requires burning, in aggregate, extensive amounts of non-renewable fossil fuels. By reducing the fuel consumption, eco-friendly tires improve the average mileage, which translates into energy savings of 1500 MJ within a single life cycle. A similar mechanism is observed during the tire manufacturing stage—the technological process of one ecological tire production consumes 995 MJ energy less compared to the traditional tire manufacturing product (Figure 11).

**Figure 11.** Cumulative Energy Demand (CED) assessment of energy consumption at individual stages of the traditional and ecological tire life cycle, including the type of raw material.
