The Mazda3 is all new for 2010. Outside the '10-3 gets Mazda's new corporate smiley-face grille; inside it gets a long list of standard and optional equipment of the sort traditionally found on larger cars -- dual-zone climate control, rain-sensing wipers, and push-button ignition. The 3 once again offers two engines; the 3i gets a 148 hp two-liter, while the 3s gets the 167 hp 2.5 from the mid-size Mazda6. Unchanged: The Mazda3's fun-to-drive demeanor.[/p]