How many heart chambers do reptiles have?

Answer 1

Most reptiles have three chamber heart. Only crocodiles have four chambers like mammals.the ventricle of reptilian heart is partially divided
All reptiles have 3 chambers with the exception of the crocodilians (Crocodiles). They have 4 chambers
Reptiles, such as lizards and turtles, have either a three- or four-chambered heart, depending on scientific interpretation. One school of thought says that reptile hearts have two atria and one partially divided ventricle, while another says the reptile heart has two atria and two ventricles with an incomplete wall between the ventricles.
For the most part, they all have 3 chambers: 2 atria and one ventrical. Crocodilians (alligators, crocodiles and caimans) have an incomplete 4 chamber heart where a wall (septum) partially divides the ventrical.
There are three chambers in a reptile heart.

Crocodilians are Reptiles and they have four chambered hearts

It is debatable wether there are three or four, but for most it is 3.