Mazda3 models now offer a choice of engines:  

• Standard  148-horsepower, 2.0-liter four-cylinder engine that teams with a five-speed manual or five-speed automatic transmission
• Optional 167-hp, 2.5-liter four-cylinder engine that works with a six-speed manual or five-speed automatic
• Automatic transmission models include a clutchless-manual mode that lets the driver control gear changes by nudging the console gear selector up or down.