If you don't want your car to be stolen, why not installing proper security measures? I don't really understand why someone would trust manufacturer to protect a car. In my country nobody does that, first thing you do after you bought a new car is you install additional security devices to prevent theft.
Additional security modules. They detect hits, they don't allow engine to start unless they're unlocked with remote control. In my country most popular brands are Starline and Pandora.
