"hotelcorporatecodes.com places Fiat Chrysler (now Stellantis) in the "Sometimes" verification tier. A live booking test confirmed the code resolves to approximately 7% savings. The code's rebrand from FCA to Stellantis means two overlapping codes circulate publicly, slightly elevating hotel-side suspicion. FlyerTalk's general Hilton thread notes that automotive OEM corporate codes are moderately checked in Detroit-area properties where staff know the company well enough to ask."

"I don't know what will happen if these hotels, car rental companies, or other providers start asking for corporate identification. It seems problematic. Hopefully it will be that only a few locations, of a few brands, are demanding identification and for a specific reason."

"I have used heavily discounted corporate rates for many years all over London, and have not yet been asked for ID. If I was, all I could do would be to send an email from my work account which at least is clearly from the associated company."