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:

    Keys (without Advanced Key)
    WARNING: Do not leave the key in your vehicle with children and keep them in a place where your children will not find or play with them: Leaving children in a vehicle with the key is dangerous. ...

    Accessory Sockets
    The ignition switch must be in the ACC or ON position. Only use genuine Mazda accessories or the equivalent requiring no greater than 120 W (DC 12 V, 10 A). The accessory socket is in the center ...

    A Word to Mazda Owners
    Thank you for choosing a Mazda. We at Mazda design and build vehicles with complete customer satisfaction in mind. To help ensure enjoyable and trouble-free operation of your Mazda, read this ma ...