There are coupes which have capacity for 4 persons but only two big doors. Primarily these cars are designed keeping in view for two, driver and one passenger. The other model is the sedan which has capacity for 5 and has 4 doors. This can also be called a family car. Depending on the size of the car, they are categorized as Compact, Mid-sized and Full. Compact cars are very small in size and have a good mileage per gallon too. Some manufacturers even make two seated compact cars. The power of the compact car is also little less than the cars of other categories. There are other cars that have powerful engines and are rated as sports cars.