It is generally not advisable to tow an automatic car with a bar. Automatic transmission vehicles are not designed to be towed in the same way as manual transmission vehicles. The driveshaft of an automatic transmission vehicle is directly connected to the transmission, which is continuously lubricated by the transmission fluid. When the vehicle is towed, the transmission is not engaged and the driveshaft is not lubricated. This can cause damage to the transmission.
In addition, the transmission fluid of an automatic transmission vehicle can become overheated if the vehicle is towed for a long distance or at a high speed. This can also cause damage to the transmission.
If you need to tow an automatic transmission vehicle, it is best to use a flatbed tow truck or a tow dolly. These methods of towing will not cause damage to the transmission.