@Mazher, installing a CNG Kit in a Belta is not a good idea because:
- It already gives really good mileage.
- The CVT transmission in the 1KR-FE Engine's of the '05 and plus Vitz & Belta's is meant to only allow a few different distinct gear ratios to be selected which change gear's at higher RPM's which leads to a better fuel average and enabling the engine to run at it's most efficent RPM's.
It gives around 15-17 KM/L in the city, while on the highway it gives around 17-19KM/L. If you have had a recent MAF Sensor/Throttle body cleaning it can sometimes even give you around 20KM/L.
Finding a good clean car in original condition with original mileage and a genuine auction sheet is quite hard nowaday's, even if you find a 2007 Model 1.0L Fresh import, Unregistered in really good condition with a geniune 4.0A-4.5A Grade auction sheet it'll cost you around minimum Rs:11,75,000-11,90,000.