This is in regards to your query posted on the website CarDekho.com, we would like to inform you that Toyota Corolla Altis Diesel comes powered by 1364 cc diesel engine. It gives mileage of 9 kmpl in City Conditions and 13.0 kmpl on highways. You can use the given link to view more about Toyota Corolla Altis Diesel.
Karthik, we are afraid that we won't be able to help here as there are many mechanics available in Bangalore and everyone have it's own specialty. This is something that you need to search and investigate in Market. Go ahead and check with your friends as well. :)
The ARAI claimed mileage for Toyota Corolla Altis Diesel is 21.43kmpl and 14.53 for Corolla Altis Petrol. However, these figures have been achieved in the controlled condition, therefore in practical conditions the mileage drops by 3-4kmpl depending upon driving conditions.