Standard 1,2 Dynamic is great for bad roads. You won't believe the kind of roads I drove it with four people, full boot and roof box. It just won't hit the ground, the 4x4 only has 5 mm more ground clearance. More then that, the little engine is so high you can't really hit it, you would hit the front axle first, and that's not a big problem.
But the same does not apply to the Multijet, which has the engine quite low mounted and there are a lot of those with broken oil bath in service.
So if it's a petrol one just let it be, there's not much damage you could get.