Yes it can, as for the restriction the dealer or the car's user manual can help.
There are Class II hitches available for your 2006 Amanti. Check out Hidden Hitch # 90151 and Draw-Tite # 36415. These hitches have a tongue weight capacity of 300 pounds and gross trailer weight capacity of 3,500 pounds.
Like Kitt pointed out, you need to contact Kia or check your owner's manual regarding the capacities of the car itself. It is entirely possible, even probable, that the car is not capable of pulling as much weight as the hitch itself. When towing, you must always follow the ratings of the lowest rated components.
Here's a link to the instructions for these hitches.
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