If your Alto is making cut cut noise even when you are driving straight, there is a possibility that the front axle might be damaged.
If you get it checked with Maruti service center, they might suggest that you should replace it genuine Maruti service part which will cost you around rupees 2100 you can also the repair it. The repair costs will surely be minimal when compared to going full axle change.
This is also known as cv axle or drive shaft since this is a forward wheel drive car that's why CV axle is used. You can easily get this part in local shops or any Maruti authorized Service Centre. You can also order it online on websites like bodomo.
