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Car Safety Feature - Auto Emergency Braking (AEB)

What is AEB?

Auto Emergency Braking (AEB) is a feature that alerts a driver to an imminent crash and helps them use the maximum braking capacity of the car. AEB will independently brake if the situation becomes critical and no human response is made. AEB comes in three categories:

  • Low speed system – works on city streets to detect other vehicles in front of your car to prevent crashes and non-life threatening injuries such as whiplash
  • Higher speed system – scans up to 200 metres ahead using long range radar at higher speeds
  • Pedestrian system – detects pedestrian movement in relation to the path of the vehicle to determine the risk of collision

Front collision warning systems vary between manufacturers – and even models. Some vehicles feature two or more AEB systems.

Here’s an example of what some car manufacturers call AEB

  • Alfa Romeo: Autonomous Emergency Braking
  • Audi: Pre Sense Plus
  • BMW: Driving Assistant Plus
  • Ford: Active City Stop
  • Holden: Automatic Emergency Braking City Stop
  • Honda: Collision Mitigation Braking System
  • Hyundai: Autonomous Emergency Braking
  • Kia: Autonomous Emergency Braking
  • Land Rover: Autonomous Emergency Braking
  • Lexus: Pre-collision Safety System with Brake Assist
  • Mazda: Smart City Brake Support
  • Mercedes-Benz: PRE-SAFE Brake
  • Mini: City Collision Mitigation
  • Mitsubishi: Forward Collision Mitigation
  • Nissan: Intelligent Emergency Braking with Forward-Collision Warning
  • Peugeot: Active City Brake
  • Skoda: Multi-Collision Braking
  • Subaru: Pre-Collision Braking System (Eyesight)
  • Toyota: Pre-Crash Safety System
  • Volkswagen: City Emergency Braking
  • Volvo: City Safety

Find cars with AEB

Use our search tool to find cars with AEB. Note that Auto Emergency Braking must be fitted at time of purchase and cannot be retrofitted.

Find cars with AEB - Low Speed Systems

Find cars with AEB - Higher Speed Systems

Find cars with AEB - Pedestrian Systems

Why should I get a car with AEB?

An analysis of international crash data conducted by Fildes et al. in 2015 showed cars fitted with AEB were 38% less likely to collide with the car in front of them. Another study by Schittenhelm in 2013 found AEB reduced rear end crash severity by 53% and completely avoided rear end crashes by 35%.

Findings from various Australian studies and insurance claims have also indicated that AEB can make a significant reduction in both fatal and injury crashes.


Does AEB work on different roads?

Yes, but depending on road conditions, stopping distances may vary.

Will AEB work in all weather conditions?

AEB should work under most conditions however wet roads may increase stopping distances and fog, or sun glare may impact on the technology's ability to detect hazards. It is important to remember that the driver always has responsibility for the vehicle and that they should drive to the conditions.

Does AEB work if you are reversing?

Some manufacturers are now introducing reverse AEB. Please check with the vehicle manufacturer to determine wether the vehicle you are considering purchasing is fitted with this feature.  

What speeds does AEB work at?

The systems vary by manufacturer so check with your dealer or owner’s manual.

Can AEB detect people, animals and objects?

All AEB systems can detect potential collisions with the car in front. Pedestrian systems detect people. Some low speed AEB systems can detect objects and animals. Systems vary by manufacturer so check with your dealer or owner’s manual.

Does AEB work when towing?

Yes, however stopping distances may increase due to the heavy load, so AEB may not be able to avoid the crash. Having AEB should still reduce the speed at the point of impact and this means there will be less force to be absorbed by the vehicle and any object it hits. Reducing impact force reduces the chance of injuries to the people involved.

Can you switch off AEB?

AEB systems vary by manufacturer but usually AEB can be switched off. Check with your dealer or owner’s manual.

Can I get AEB installed after I've bought my car?

No. AEB cannot be retrofitted. Even when you buy a used car, you can find cars with AEB.

How much does AEB cost?

Costs vary by manufacturer. Keep in mind that some second-hand cars offer AEB.

What is the warranty on AEB systems?

This varies by manufacturer.

Is Emergency Brake Assist the same as AEB?

No. Emergency Brake Assist (EBA) increases braking pressure to stop a car as quickly as possible. EBA cannot detect that your vehicle is about to collide with the vehicle in front. However, AEB systems will work with Emergency Brake Assist to detect a hazard and apply maximum braking force.

Is Adaptive Cruise Control the same as AEB?

No. Adaptive Cruise Control (ACC) detects the speed and distance of the vehicle ahead and maintains a safe following distance. ACC requires the driver to set the desired travelling speed and will accelerate or decelerate up to that speed depending on the speed of the vehicle in front.

The role of Safe Vehicles as we move Towards Zero.