Size does not matter, what matters is what the vehicle is capable of. Read the Manual and look for the Tongue Weight, Carring Weight, Towing Weight. Important numbers to know. Strong suggestion to use a weight distribution hitch.
My sedan was build and imported from Australia. Ordered through GM Holden the Class 3 OEM Hitch. The car is rated to 4,620 Lbs towing with a 462 Lbs tongue weight. Is advised to use a brake controler over 1,650 Lbs. This is a sedan a regular 4 door passenger car. Got the 7 Pin GM OEM trailer connector.
A photo with the OEM Hitch and the Plug on the side.
There is a trick to this... when loading your vehicle, to do it properly is to consider the carring vehicle weight. The Tongue Weight, plus cargo and passengers.
If your vehicle has a 2,000 lbs carring weight, substract the weight of the trailer tongue and passengers. What is left is the cargo weight. You will be surprised 4 adults and trailer will get you easy over 1,000 lbs.
There is no rule that says that you "Must Have A Truck" to do towing. Is all about the design capabilities.
Take some carring weight and place it on the TT. Is all a number game and where to put it.
On a side note....
My car is a 6.0 L L76 V8 with a 6L80 Transmission and 1 qt Heavy Duty Transmission Cooler. Truck Engine and Transmission on a car.