Under the Hood

The Mazda3 i comes standard with a 148-horsepower, 2.0-liter four-cylinder engine that can team with a five-speed manual or five-speed automatic transmission. Mazda3 s models use a 167-hp, 2.5-liter four-cylinder engine that works with a six-speed manual or five-speed automatic. The automatic includes a clutchless-manual mode that lets the driver control gear changes by nudging the console gear selector up or down.


A Mazda3 i with a manual transmission achieves the best EPA-estimated gas mileage, with its 25/33 mpg city/highway rating. Selecting the automatic lowers the city rating by 1 mpg. The Mazda3 s, meanwhile, is rated at 21/29 mpg with the manual and 22/29 mpg with the automatic.

    See also:

    Child Restraint Precautions
    Mazda strongly urges the use of child-restraint systems for children small enough to use them. You are required by law to use a child-restraint system for children in the U.S. and Canada. Check ...

    Wiper Blades
    CAUTION: Hot waxes applied by automatic car washers have been known to affect the wiper's ability to clean windows. To prevent damage to the wiper blades, don't use gasoline, kerosene, paint ...

    Seat Warmer
    * Some models. The front seats are electrically heated. The ignition switch must be in the ON position. Press the switch to turn the seat warmer on or off. When the switch is in the ON positio ...