See also:

Safety
Standard safety features include side-impact airbags for the front seats and side curtain airbags for all three rows of seats. Second-row seats have Latch child-safety seat anchors and top tethers ...

Accessory Sockets
The ignition switch must be in the ACC or ON position to prevent the battery from discharging. Only use genuine Mazda accessories or the equivalent requiring no greater than 120 W (DC 12 V, 7 A ...

Under the Hood
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 Opt ...