I wish they had a better signs at the Athens airport. I had to ask a few people before I find the rental car location. I got Fiat Panda, manual transmission with 61000km on it. The car is really small, only 2 "in-cabin" suitcases fit into the trunk. Had some random clutch problems, but all overall is OK, surprisingly quite stable on the highway even at 130km/h, and easy to park on tiny Athens streets. You get a car with NOT a full tank, in my case it was almost empty, which is extremely inconvenient , I had to find a gas station ASAP, and when you return the car, most likely you will put some extra gas and loose 20-30 euros.