Of course the interior is different as well. I am not sure if the suspension is also different.To meet North and South American needs, ProMaster was retuned for rougher roads and higher payloads, and corrosion protection was added. Safety, emissions, and powertrains meet U.S. standards. As sold in North America, the Ram ProMaster has a maximum 5,145 pound payload capacity, with a 5,100 pound maximum towing capacity. The gross combined weight rating for the 3.6-liter V6 is 11,500 pounds and 12,500 pounds for the 3.0-liter diesel. The Ram ProMaster appears to have far higher capacities than Fiat Ducato, whose maximum payload is roughly 3,472 pounds.