I just finished driving a rental car for about a week and thought I'd bring this thread back up from the depths in case anyone else has a rental car experience to share, and also just for fun.
The car we rented was a Citröen C4 Cactus. Probably not something that will be in stateside rental fleets, but if you happen to be renting in Europe, the dad-gum things are everywhere. After spending a week with the car, I felt like I got to know it pretty well, and although it was a decently ok car, I can say with some degree of certainty that I'll never own one. Can't say I'll go out of my way to rent one again either.
Ours had the 1.2L 3-cylinder gas engine with a 5-speed manual. I read that they are rated at about 100hp, and although I'd say that isn't nearly enough, the people in the EU who are calling the shots on engine displacement these days seem to think that's plenty. It does ok once you get up to speed, but getting there obviously requires some patience. The weather was cool last week, so we didn't see the air conditioner in use much, but I'd bet it would have a tough time keeping up with freeway traffic running the AC in warm weather. The suspension was a bit on the soft side too; lots of wallowing in turns, and with my son in the back seat, lots of bumps that felt like we bottomed out. The car definitely isn't made for autocrossing.
Ours came to us in a shade of purple that I probably wouldn't have asked for, but like the rest of the car, wasn't terrible; just ok.
The exterior has what they call "Airbump" panels on the sides that are supposed to protect it from door dings in parking lots, and I guess they did the job because there was zero damage on the thing when we picked it up with about 35,000 kilometers on it, and none incurred while we had it. They aren't the most handsome accoutrements I've seen on a car, but they kinda grow on you. The interior was actually pretty decent. Decent amount of legroom & headroom front & back, although my youngest son complained about riding in the back seat. But at 6'3"/250lbs, he complains about pretty much every back seat he rides in. The seats were ok for the driving that we did, but my back wasn't happy with the driver's seat after about an hour drive. I wouldn't want to take it much farther than that. The driver's seat adjusts up/down, forward/back, and the seatback tilts; the passenger seat lacks the up/down adjustment. And my wife's back was none too happy with the passenger seat.
The radio, HVAC, navigation, and pretty much everything else was controlled by the screen in the middle of the dash. When we picked the car up, it was set to speak Estonian. Not sure if the people who used it before us were from Estonia, or did that as a prank, but getting it to speak English took some doing. The manual in the glovebox was in Dutch (we rented it at Schiphol Airport outside Amsterdam) so it wasn't much help, and the system itself isn't terribly intuitive. But I finally figured it out, and it worked pretty much ok, but there were a couple functions I couldn't figure out, like just searching for a landmark. It seemed to always want a nearby city. One strange thing was that the voice for navigation has a volume control that's separate from everything else; at the default setting the voice just boomed over the speakers in the car, even when the music was set to a moderate level! That took a little doing to figure out as well. There was no Bluetooth capability for the stereo, but there was a single USB jack, and the system played well with an iPhone.
One disappointment in the interior was the lack of cupholders; only one for the front seats and one in the back. Must've been taking cues from 1980's German engineers.
So, all in all, it was ok. Definitely not even Super.