Thanks for the detailed feedback, and i agree driving at Lahore is much more intense with respect to Rawalpindi/Isb.
Was that 1.3 litres or 1.0 litres Vitz? And one more thing if possible for you, can you check the size of condenser and radiator in Vitz? Is it full length front ? As in Passo its smaller in size i.e almost half length.
If condenser and Radiator is same in both cars then i think Passo needs Voltage stabiliser.
Ps: thanks for the help, and i can understand and appreciate your comments, healthy discussion is always helpful
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