Water — A few drops of water or a small puddle under a vehicle, isn't such a big deal. The most likely cause of water collecting under a vehicle is condensation from the air conditioner. Most experts say there isn't much to worry about unless other problems show up.

Coolant — Keeping an engine cool is very important to the overall health of a vehicle. Certainly, motor oil serves this function. However, there is another fluid that does this too – antifreeze or engine coolant. This fluid will have a distinct color, usually a shade of neon green or pink. Seeing antifreeze on the ground may mean problems with the radiator, you should schedule a service appointment today.

Transmission fluid — The stresses put on a vehicle's transmission requires some special components. Leaking transmission fluid will appear red in color and have a consistency similar to that of motor oil. It serves much the same function. A broken transmission can be a very expensive fix, do not ignore this symptom.