Last time I checked the Kia Soul had no rated towing capacity. I don't know about your Sportage- it may depend on the year. The place to start is your current owner's manual. If you decide you need to upgrade, you can download the owner's manual for most vehicles online. Once you determine if a vehicle is even rated to tow a Scamp
, then you ask questions about reliability, real-world experience, ease of set-up, etc.
At a minimum, you need a vehicle rated to tow 2000 pounds for all but a few 13'ers.