Maruti itself offers about 4 car models in CNG class. Maruti WagonR eco is a good car for someone looking for utility along with enough sitting space. The car offers an amazing mileage of 26.2 km/ kg and ranges between 4 â?? 4.50 lakhs. Other Maruti car is the Alto with 39PS @ 6200rpm. The car costs the least, falling in the range of 2.80-3.50 lakhs and offers fuel average like that of the WagonR. Maruti Ertiga and Estillo are also best option keeping in mind the cost of car and its utility. To match these positive factors the mileage which has always been a prime concern of many car users and potential buyers is also good, 27 km/ kg. Hyundai also has released CNG version of Santro Xing for 3.5 lakhs. Cars like Maruti Omni and Tata Indica which has been in market for a long time are now also available in CNG form.