Audi''s Sideguard head airbag system is now standard on all A4s, and the Electronic Stabilization Program (ESP) is available throughout the model line. In addition, the 1.8 T engine gets a boost of 20 horsepower and is certified as an Ultra-Low-Emission Vehicle (ULEV).

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　　Abs Brakes (4-Wheel)|Air Conditioning - Front|Air Conditioning - Front - Automatic Climate Control|Airbags - Front - Dual|Airbags - Front - Side|Airbags - Front - Side Curtain|Airbags - Rear - Side Curtain|Traction Control|Audio - Premium Brand|Interior Aluminum Accents|Security Anti-Theft Alarm System|Steering Wheel Tilt And Telescopic|Cruise Control|Exterior Entry Lights|Exterior Mirrors Heated|Exterior Mirrors Power|Tachometer|Trip Computer|Clock|Drivetrain Limited Slip Differential: Center|Front Fog Lights|Headlight Cleaners|Power Brakes|Power Door Locks|Power Steering|Power Windows|Rear Seats Split-Bench|Seats Front Seat Type: Bucket|Windows Front Wipers: Intermittent|Windows Rear Defogger