The all new Chevrolet Aveo CNG, a bi-fuel sedan is equipped with a full size petrol tank. In the normal condition, Chevrolet Aveo CNG is a BS IV vehicle and it can run 180 to 200 kms by a full tank of CNG. To know more details, please follow the site: http://www.cardekho.com/carmodels/Chevrolet/Chevrolet_Aveo
Tata Indigo XL returns around 12 kmpl mileage with petrol and around 21kmpl with diesel, which is decent. The 1.4-litre petrol engine has been tuned for more power than the fuel efficiency, which is the reason behind its low mileage figures.
Follow the below site to check the perfect differences.
To know more details of the car, please do follow the site: http://www.cardekho.com/carmodels/Tata/Tata_Indigo