Weird and Wrong Reflections - Help needed please

Hi All
I have modeled Donald Ducks car « 313 ».
When I render it with Shaderlight, Twilight etc, everything works fine (please see first picture below).
When I render it with RenderI [In], it will display wrong refections on the round mudguards as you can see
on the second picture below. - So I have no idea, what’s going wrong and I am happy about any help :exclamation: :question:

If anyone please could make a test, the model is posted in the 3D Warehouse:

Thanks in Advance