S4 Saloon Safety

Protection
The technology we hope you'll never need

Vorsprung durch Technik doesn't stop at power, performance and legendary Audi handling. We push the boundaries of safety, constantly looking for new ways to protect you and your passengers.

Airbags
Adaptive technology improves on the original airbag concept significantly. In the event of a collision, the level of impact and the position of the seat are considered and the deployment force of the airbag is adjusted accordingly. Front and side airbags for both the driver and front passenger are available as standard across all S4 models.

Seat belts
If there's a head-on collision, the three-point inertia reel seat belts tighten to strap you to your seat more securely, limiting excessive movement caused by momentum.

Audi Backguard head restraints
The Audi Backguard system is designed into the body of the seat and counteracts the dangers of whiplash injuries to the neck and head in the event of a rear-end collision.

Quattro®
Safe and sure with quattro®

Audi's optional quattro technology isn't all about high-performance handling. For every-day driving, especially with non-ideal road conditions, quattro will help you reach your destination quickly and safely.

It works by varying the amount of drive that is sent to each of the four wheels, reacting in milliseconds, constantly feeling for any loss of grip. So, on slippery surfaces, if one or more wheels are at risk of spinning, more drive is directed to wheels that have better road-surface contact. You don't notice this happening: all you feel is more assured cornering, whatever the weather.

ISOFIX Anchor Points
Child safety as standard

With ISOFIX, compatible child safety seats can be fitted swiftly and securely. On each outer rear seat and the front passenger seat, ISOFIX mounting points are provided. The front passenger airbag can be deactivated for when a child seat is present. ISOFIX mountings are standard across the model range.

Adaptive Lights
Adaptive lights show you the way

Optional adaptive lights swivel in the headlamp cluster. When turning, they follow the steering direction and cast a wider angle of illumination so you can see round the bend more clearly at night.

ESP
ESP keeps you pointing in the right direction

Audi's electronic stability program (ESP) is a combination of advanced technologies that helps keep the car under control in more extreme situations such as when you need to avoid an unexpected obstacle in the road. ESP is especially helpful in adverse weather conditions.

When you need to turn quickly and sharply, ESP identifies your intended direction and responds by applying the brakes to individual wheels.

Brake disc wiping - keeping your brakes dry
In the wet, ESP also dries the brake discs by intermittently applying the brake pads lightly. You and your passengers won't notice but, compared with conventional braking systems, your stopping distances on wet roads will be considerably shortened.

Electronic Safety System

The onboard technologies on Audi vehicles make them some of the safest in the world - especially when road conditions are less than perfect.

ABS
The Anti-lock braking system works by momentarily releasing and then applying the brakes when it detects a skid resulting in reduced stopping distances and the ability to turn under emergency braking.

ASR
Anti-slip regulation - or traction control - reduces power to any wheel that is in danger of spinning. Full power is returned when traction is re-established.

EBD
Electronic brake-force distribution works in conjunction with ABS to ensure an even maximum braking force between the front and rear wheels.

EDL
The electronic differential lock allows a smooth getaway on surfaces with mixed levels of grip.

ESP
Audi's electronic stability programme uses the four technologies above. It identifies the intended direction and applies braking to individual wheels to help keep the car stable.