[tacker2000]

Yes this is true. I once saw a TV show where they tested the VW ID (SUV type) with a normal caravan/trailer and they had over 50% less mileage.

[lini]

Perhaps this YT video[1]? Range goes from 231 miles @ 60mph (best case) down to 100 miles @ 60mph when towing a small caravan.

[1]: https://youtu.be/mmQJUW-VyRY?t=1162