The first of these, the M.18 Economico ("Commercial"), was generally similar to the military version, but was followed by the M.18 Lusso ("Luxury") which featured an enclosed cabin.
1種目のM.18 Economico ("Commercial")は軍用型と同じであったが、M.18 Lusso ("Luxury")は閉鎖式のキャビンが設けられた。