The gross vehicle weight rating of your towing vehicle amounts to 6.5 t; the gross vehicle weight rating of your trailer is 5.5 t. Is this combination vehicle liable to the toll if used on a motorway?

Yes, if the combination vehicle is intended exclusively for the carriage of goods by road

Always, because the combination vehicle exceeds the gross combination weight rating of 7.5 t

No, because the towing vehicle does not exceed the gross vehicle weight rating of 7.5 t