Airbags deploy at up to 300 km/hr.
The minimum speed set by the government for airbags to deploy is 25 mph. The 2007 PT Cruiser should have the airbags deploy at this rate of speed or less. It also depends on the type of collision, when the airbags will deploy.
SRS (Supplimental Restraint System) aka Airbags dont have a set speed that they deploy... They deploy when jolted hard enough or have been strucked in an impact.
http://www.nhtsa.dot.gov/people/injury/airbags/airbags03/page3.html
there is no minimum speed the car can be parked and someone run into it and the airbags can deploy
That is information that the car companies will not release.
200 mph
It deploys at about 25mph
The force of the collision has to be great enough
no minimum speed. the vehicle can be stopped and someone else hit it and bags will deploy depends on where it was hit and how hard
Frontal Airbags will deploy at at least a 55 mph crash or more.
The vehicle has to be traveling above a certain speed for the air bag to deploy. I believe it is 35 mph. It could be more.
The force of the collision has to be great enough