I've test driven one. But they are all 4 cyl. They are not the biggest engine in the world. They're designed for efficiency and high mpg's. The Si model is a performance trim and has the biggest 4 cyl avalible. As expected, it's much higher in price. The smallest 4 cyl is good enough to get the car moving easily, but with the a/c on and 4 people, expect it to struggle a little.