See Figures 1 and 2
If your car is equipped with a 6 cylinder engine and you are using a Class I hitch, the loaded trailer weight must not exceed 2000 lbs. (900 kg). If you are using a Class III hitch, the loaded trailer weight must not exceed 5000 lbs. (2250 kg). If your car is equipped with an 8 cylinder engine and you are using a Class III hitch, the loaded trailer weight must not exceed 6000 lbs. (2700 kg).
Make sure that only 10-15% of the trailer's weight is on the tongue, with the tongue weight not exceeding 10% of the maximum weight your car's engine can safely tow.
The load you add to your vehicle must never exceed its Gross Vehicle Weight Rating (GVWR). The GVWR can be found on the Vehicle Certification Label, located on the left front door lock panel. To figure the total weight of the load, add the weights of the following: driver and passengers, luggage and anything else carried in the vehicle, the loaded trailer's tongue weight, and any equipment added to the vehicle.
If you cannot easily determine these weights, you can take your car to a place equipped for weighing vehicles, such as a shipping company or truck inspection station. Weigh your car without the driver, passengers, luggage or trailer. Then weigh the car with the driver, passenger, luggage and trailer attached. The total weight of the load is the difference between the two weights.
After determining the weight of the load, you must make sure the load weight plus the vehicle weight does not exceed the GVWR. You must also make sure that the weight carried over each axle does not exceed the Gross Axle Weight Rating (GAWR), which is also found on the Vehicle Certification Label.
If your vehicle exceeds the GVWR, remove part of the load until the loaded vehicle weight is within the limit. If the GAWR is exceeded on either axle, shift the load or remove part of it from the vehicle.