Using the example of an EC standard consumption (MVEG), the figure shows the effects of vehicle-related measures on the fuel consumption of a passenger car. It also becomes obvious here that improvements particularly in the drivetrain efficiency and weight reduction lead to decreasing fuel consumption. Optimizing aerodynamics and road resistances only have a minor influence on this cycle.
In Module 1, it has already been explained that the weight in commercial vehicles has a decisive influence on road resistance and in turn on fuel consumption. A reduction of the vehicle weight, primarily serves to increase the pay-load capacity. The total weight in the loaded condition is prescribed only by statutory regulations and not by vehicle construction. In contrast to passenger cars, there is a significant potential for reducing fuel consumption through aerodynamic measures. In particular, this is valid for long-distance trucks that are frequently driven in the range of allowable maximum speed.