2004 Mazda3 Light Bulbs Types:
| Bulb | Type | Output |
| Interior Lights: | ||
| Trunk light (Sedan) | W5W | 5W |
| Luggage compartment light (Hatchback) | - | 5W |
| Overhead light/Map lights (Front) | W5W | 5W |
| Overhead light (Rear) | - | 10W |
| Exterior Lights: | ||
| Headlights High beam | HB3 | 60W |
| Headlights Low beam Halogen | H7 | 55W |
| Headlights Low beam Xenon fusion | D2S | 35W |
| Front turn signal lights/Side-marker lights | 1157NA | 27/8W |
| Fog lights | H11 | 55W |
| Side turn signal lights | WY5W | 5W |
| High-mount brake light | W16W/921 | 18W |
| Rear turn signal lights | W21W/7440 | 21W |
| Brake lights/Taillights | W21/5W/7443 | 21/5W |
| Reverse light | W21W/7440 | 21W |
| License plate light | W5W | 5W |
