Answer: While filling in the sinking areas will make it easier to drive on, you really need to address the underlying cause. I suspect there is a drainage problem and the soil beneath your driveway is being washed away. I can't really advise you as to how to remedy the situation without actually inspecting the area. It might be that all you need to do is install a curtain drain to redirect runoff, but the problem might be more complex than that. Why not talk to a landscaping professional to see what your options might be? Hope the fix is an easy one!
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