XLi and GLi share the Same engine Indeed. Many think GLi just has additional Colors and Power Windows + Central locking only but in real, GLi has ABS, EBD and BA as well. The price difference is ov Rs. 150000.
Buying Ecotec... i can't say. It was a widely complained issue ov Pre facelift models that the engine Used to Blow off on CNG at mileages between 50-60000 km but my aunt recently sold her XLi 2010 with aftermarket CNG Driven without any issues up to 124000 km.
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