C1
Vehicles weighing between 3,500 kg and 7,500 kg, with or without a trailer - weighing no more than 750 kg
18*
C1+E
As category C1 but with a trailer weighing more than 750 kg. The total weight of the vehicle and the trailer together can’t weigh more than 12,000 kg. The weight of the trailer, when fully loaded, can’t weigh more than the unladen weight of the vehicle
21*, **, ***
hope this helps mark so depending on the weight of the trailer would limit the weight of everything else