check this out bro
LDI VDI ZDI are the trim levels of car in Maruti lineup. L,V, Z indicate the trim level, like stereo, fog lights, body colored mirrors, power windows, remote/keyless locking alloy rims, interior fabrics . Di stands for Diesel engine and in all the versions LDI, VDI, and ZDI the engine is identical in this case the multijet engine.
Similarly LXI, VXI and ZXI stands for petrol engined car, L being the least equipped with no power windows stereo etc V being the mid of the range and Z topping the range everything gotta meaning
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