I found this article in Car and Driver (April 1993) and thought I'd share it with you guys. It's about the Citroen XM. I'm surprised it gets pretty bad gas mileage from a 3.0L OHC V6 (15/21). I mean this car is roughly the same weight, but slightly smaller than a Ford Taurus and it has a 3.0L OHV V6 that gets 20/29.