A transmission fluid leak should be checked promptly. Whether the vehicle can be driven depends on the fluid level, leak rate, and symptoms. The size of a spot on the ground does not reliably show how much fluid remains.
Low fluid can affect lubrication, cooling, and hydraulic operation. Continuing to drive may turn a repairable leak into a more extensive problem.
Contact Certified Transmission in Bellevue for guidance. If the vehicle slips, loses drive, leaks heavily, or shows an overheating warning, stop safely and arrange assistance.