Given your requirements, you should consider the Maruti Suzuki Swift, Hyundai Grand i10 Nios and Tata Tiago hatchbacks, all of which get CNG options. However, the i10 Nios and Tiago offer a properly usable boot as the CNG tanks are placed under the boot, unlike the Swift. Furthermore, the Tata can also be had with an AMT automatic gearbox which will be more convenient for you on your daily city commute.

