Why Fiat Chrysler Automobiles N.V. (FCAU) shares have been downgraded?

Why Fiat Chrysler Automobiles N.V. (FCAU) shares have been downgraded?
Fiat Chrysler Automobiles NV engages in the style, engineering, manufacturing, distribution and sale of automobiles and light industrial vehicles, engines, transmission systems, automotive-related components, metallurgical items and production …
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