To go with a car is totally depends on your personal preference and requirements. If you drive less than 1500 km a month (50kms a day), you don’t need a diesel. The petrol engine is a lot more refined and is a lot more quiet and powerful. Yes, the diesel is more efficient, but it doesn’t mean it is cheaper to have a diesel engine unless you have a lot of running. Diesel is cheaper to run. But diesel cars are more expensive. If you do not have too much running, petrol makes it an ideal pick. For more assistance, follow the below link - Compare. Follow the below link to get a detailed comparison - Compare. Moreover, you may have a test drive of the cars for a better idea of comfort and drive quality by visiting the nearest dealer in your city. You can click on the following link to see the details of the nearest dealership and selecting your city accordingly - Dealers.
Generally, the down payment of a car varies from 20-25% of the ex-showroom price. For the exact confirmation, we would suggest you walk into the nearest dealership as they will be better people to assist you - Dealers.