Yeah, I don't see why this small tow car should be more capable of towing than a small person car...

European towing standards are ridiculous, manufacturers decide what their car can tow. It's one of the only places where the American standard, which requires testing the vehicles and passing actual tests, is much better and safer.

Trailer design is also different with European trailers having their wheels further forward, putting less weight on the hitch, this in turn makes the assembly less stable which is why the speed limit when towing will often be lower.

Your average compact car, if you're lucky, can tow 1200 kg braked. A midsize SUV can typically tow 2,000+, and a large SUV 3500.

Renting a gizmo like this would possibly be a lot more cost effective than owning a large vehicle that you only use the full capacity of a few times a year.