Lxi should cost between 6 to 650..of 2007 08... I advise you to see the following as per my experience:
Run the Car on both CNG and petrol...go for a drive in open area. Car should not lag or give missing...probably issue of ignition coils.
Go for local CNG wali liana...not intector Rail wali..
Check axles...by full cutting the steering...axles are too expensive
Roll up all windows and observe any suspension sounds.
Engine should be responsive...I mean should roar as per your pedal depression...
Rest is luck bro...best of luck
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