Wouldn’t this be more an issue of manual vs automatic transmissions? I would think towing in a manual with a healthy clutch should work just fine. Whereas, I would towing could have negative implications for the lifespan of a car’s automatic transmission.
Forget the wear and tear of towing and look at the towing capacity and safety. Cars here in the US aren’t rated too safely tow much, hell even trucks have a pretty low limit.
So either the car in the picture was rated to tow a higher weight (could be the unibody or frame, or other structural components), or the laws there are more liberal towards towing safety and weights, or this is an ultra light camper that is safe to tow.
Not all campers or cars are made alike, same with laws around them.
You forgot the other option: The owner doesn’t know / doesn’t care about the safety limit and is rolling the dice.
This is the most likely situation, that car has a towing capacity of 2000kg or about 4500lbs
Travel trailer of that size is probably about 5000-6000lbs.
So this is what you’d call dangerous, and good luck if there’s a hill.
![[image] Since many people seem to believe you can't tow with cars, here's roughly what dutch people end up doing on vacation.(feddit.de)](https://feddit.de/pictrs/image/ea1db421-ccea-4e3d-af37-aec9b3e62de4.jpeg){kind=link}