Cars with High Fuel Efficiency | Image: Republic Cars with High Mileage: If you are planning to buy a new car with good fuel efficiency, decent design, and features, there are multiple options. Under a ₹20 lakh budget, multiple cars either have a petrol, diesel, CNG or hybrid option to choose from. Some of the popular SUVs in the market with good fuel efficiency numbers as per ARAI are the Maruti Suzuki Swift, Toyota Hyryder, Mahindra XUV 3XO and others. Here is a list of the top 5 fuel-effici...