the Maserati Quattroporte depreciates an average of 64.5%, or about $90,000 off the average list price of the car, over five years.

The top ten of the poor automotive investment list includes two other Maseratis, the Ghibli and Levante, three BMWs, the Jaguar XF, Infiniti QX80, Audi A7, and Cadillac Escalade ESV.

the worst news for any particular group of owners is for Corvette owners. 

They will be very sorry to find out that, while America's sports car actually hasn't depreciated much in the past five years (just 27.5%), that means the average Corvette did not increase in value. Now, you know, if yours is parked in a garage right now and only removed on Sundays to be cleaned with cotton swabs, you might as well go drive it. Enjoy it, it's not a good investment, it's a car.

https://www.thedrive.com/news/the-maserati-quattroporte-is-still-the-undisputed-king-of-depreciation