The interior of the 3 series BMW features various technologies inside the car. The features included are:

• air conditioning with climate control
• diversity antenna
• front and rear ashtray
• audio anti- theft protection code
• cargo area cover/rear parcel shelf and light
• manufacturer's own rds audio system with am/fm and cd player with ten speakers
• door ajar warning
• low fuel level warning and low washer fluid level warning
• rear view mirror
• remote audio controls
• front side airbag
• front and rear reading lights
• floor covering - carpet in load area
• ventilation system with recirculation setting and micro filter