First rental with Sixt, I am Platinum based on a comp from my airline status.

MCO, reserved PCAR (Volvo S60 or similar when I reserved, later changed to CLA or similar)

At check-out the agent mentioned they had specials of 75% on upgrades and I said I should receive a two car class upgrade based on my Platinum status.

He assigned me a BMW 328i, which as far as I know is just a one-class upgrade. Made for a tight fit for four adults and their baggage.

I received a survey after the rental, I gave them praise where appropriate (great shuttle drivers, efficient return) but expressed my disappointment in not receiving the appropriate upgrade (there were plenty of E Class/5 series on the lot).