2001 Kia Optima (K5) Towing Capacity

Trim	Engine/Transmission	Braked Towing Capacity
Base	2.5-liter petrol/gasoline, 4-speed automatic Tiptronic	907kg / 2,000lb~
Base	2.5-liter petrol/gasoline, 5-speed manual	907kg / 2,000lb~

How much can the 2001 Kia Optima (K5) tow?

As you can see from the table of towing capacity readings above, all of the trims that are mentioned can tow a braked trailer up to 907kg (or 2,000lb~).

What does braked towing capacity mean?

When the manufacturer states that a towing capacity is "braked" they are referring to brakes being fitted to the trailer that the car is towing.

At least one of the axles on the trailer that the vehicle is towing must have brakes fitted and controlled by the car if they describe the capacity as "braked".