Usually, vehicles with a wheelbase below 2400mm are called mini-cars (A00 class).
Generally speaking, a car with a wheelbase of 2400-2550mm is called a small car (A0 class).
Generally speaking, a car with a wheelbase of 2550-2700mm is called a compact car (Class A).
Usually refers to the wheelbase between 2700-2850mm, called a medium-sized car (Class B).
Generally speaking, vehicles with a wheelbase of 2850-3000mm are called medium and large vehicles (Class C).
Generally speaking, a car with a wheelbase of more than 3000mm is called a luxury car (Class D).