Audi A4 has six standard airbags. Available options include a rear view camera, rear ultrasonic parking sensors, and Audi Side Assist, which informs the driver when another vehicle is next to the A4.
| Standard Specs and Dimensions |
| Four-wheel ABS brakes | Standard |
| 4 ABS channels | Standard |
| Brake assist | Standard |
| Four-wheel disc brakes | Standard |
| Front ventilated disc brakes | Standard |
| Daytime running lights | Available |
| Compact spare tire | Standard |
| Spare tire mounted inside under cargo | Standard |
| Driver and passenger front-impact airbags | Standard |
| Seat-mounted driver and passenger side-impact airbags | Standard |
| Sideguard curtain 1st and 2nd row overhead airbag | Standard |
| Rear side-impact-impact airbag | Available |
| Front passenger airbag occupancy sensor | Standard |
| Height adjustable front seatbelts | Standard |
| Front and rear seatbelt pre-tensioners | Standard |
| 3 point rear center seatbelt | Standard |
| Locking fuel flap included with power door locks | Standard |
| Side-impact bars | Standard |
| Remote activated perimeter/approach lights | Available |
| Rear child safety locks | Standard |
| Ignition disable | Immobilizer III |
| Security system | Standard |
| Panic alarm | Standard |
| Stability control | Standard |
| ABS and driveline traction control | Standard |
| Manual adjustable front head restraints | Standard |
| Anti-whiplash front head restraints | Standard |
| 3 rear head restraints | Standard |
