Nissan sunny car is one of the most popular cars in india. It is a fuel efficient car and has a good mileage. The car is spacious and comfortable and is ideal for families. The car is available in both petrol and diesel variants. The petrol variant. The car is available in the top end model of Nissan Sunny that comes with a 1.6 liter engine which generates a power of 90 BHP. The car has an average mileage of 18 kmpl and has a fuel tank capacity of 50 liters.