If we talk about diesel cars then the price of diesel cars are higher than petrol cars but the maintainance cost is low. The engine noise can create a problem after 1 year. Diesel cars have not great pickup as compared to petrol cars. If a person travels more than 1500 km in a month then he can go for diesel cars because the price of diesel is quite low as compared to petrol
On the othe hand, Petrol cars are cheaper than diesel cars and have a great pickup. There should be no noise in engine after using for long time. If a person travels less than 1000 km a month then he can go for petrol cars.