The ARAI claimed mileage of CRDi 1.4 E is 24.0 kmpl. However, the actual mileage totally depends on several factors like driving conditions, road conditions, tyre pressure, etc. In order to improve the mileage, we would suggest you drive slower. Driving fast can reduce your fuel efficiency by up to 33% if you are traveling above 60 mph. It is best to change gears appropriately and match the gear and the RPM carefully.
For the availability of spare parts, we would suggest you walk into the nearest service centres. You can click on the following link to see the details of the nearest service centres and selecting your city accordingly - Service centre. Moreover, for an idea of the prices of the spare parts, you may follow the below link - Spare Parts.
The Hyundai Verna SX Plus is not offered with an AMT instead it is offered with an AT (Torqueconverter). For the availability of the Hyundai Verna 1.6 AT, we would suggest you walk into the nearest dealership as they will be better people to assist you. You can click on the following link to see the details of the nearest dealership and selecting your city accordingly - Dealers.