Find the leak, figure out if you can fix it, take the car to a garage.
How bad it is leaking? You certainly don't want to run a car with low Transmission Fluid as it will surely do internal damage. Most common leak areas are at the pan gasket or the transmission cooler lines that go to the radiator. Next most common areas are at the output shaft seals and around sensors or plugs on the transmission. If you replace any cooler lines with hose, make sure you use transmission hose. This will handle the pressure and the chemical resistance that other hoses will not stand up to. Also be sure to KNOW what transmission fluid is needed. One size does not fit all!
Red liquid is usually transmission fluid. transmission fluid
The better question is what is leaking transmission fluid?
means get it to a repair shop
fluid is a lubricant of transmission
Transmission fluid leaked out of car very fast. After hitting large rock. Could it be the transmission pan is broke? That is a possibility
The output shaft seal has failed and transmission fluid is leaking by, and that would explain the transmission fluid appearing there.
Because your transmission has a seal that is leaking.
check your radiator hoses and change gaskets
If a transmission is leaking fluid, it is likely that a seal or gasket has failed. Replace the gaskets and seals and the leaking should stop.
If it is leaking trans fluid into the coolant it can cause overheating.