Up to five people can fit inside the Mazda3. The steering column tilts and telescopes, and the instruments sit in a trio of round, recessed nacelles. A ratchet-type mechanism permits seat adjustment, allowing the cushion and seatback to move up and down together. Placing the rear-suspension coil springs beneath the floor increases the hatchback's rear storage space.

The s Grand Touring model includes heated leather seats, automatic headlights, automatic rain-sensing wipers and a trip computer. A moonroof, a custom-tuned Bose audio system and Sirius Satellite Radio are optional.