don't replace anything except Mehran. just kidding, its new car so there should be no problem replacing everything, and the car is new but you drove it 40k in just one and half year, therefore you need to change, gear oil, coolant, brake fluid, fuel filter if not changed recently, check plug wires resistance and plug, check rubber boots of axles and steering, AC gas pressure and quantity (if installed). thats all i know for now, Baqi experts bata dengy. good luck