Mazda's small cars have grown up. Yesterday's R100 and GLC have given way to the recently redone Mazda3. The Mazda3 got a new look for 2010 plus a wider, lighter, longer chassis.
We got to test the Mazda3 s Sport. It gets the 2.5-liter four--which replaces the old 2.3--plus a six-speed manual transmission and 17-inch alloy wheels. Navigation, rain-sensing windshield …