[SHELL ECO MARATHON FACT]
The most significant difference between Urban class and Prototype class is their appearance. Each of the categories has their own dimensions regulations.
Urban vehicles are tend to be bigger than Prototype vehicles. Thus, the weight of the Urban category usually is higher than the Prototype category. There are also regulations for the maximum weight (excluding driver) for each category which are 225 Kg for Urban vehicle and 140 Kg for Prototype vehicle.