before we discuss how to protect car from EMP strike we need to see what EMP is and what it can affect.

EMP (ElectroMagnetic Pulse) is high energy pulse that can damage electronic components, by inducing high current in coils, ressistors, and transistors.

EMP pulse is very similar to cell phone signals and tv signals only difference is it has very high power and it's very short in duration.

So as you know cell phone signals diminishes as you enter tunnel or a cave because moisture in walls of cave or tunnel absorb all or very high part of Electromagnetic signal.
Moisture is conductive as it's metals that why it absorbs signals.
Same is valid for EMP signals.


Now lets talk about cars.
Only important part in car that are vulnerable is ignition computer, it also controls ignition sparks when you drive. So without him car would not start and if you somehow menage to start it will not work because computer is faulty.

If you want to protect car computer from EMP strike simply put him in metal container. Also you my connect negative from the car battery on metal container for better protection.
All other parts in car are not essential for car to run, like mph clock, car radio, coils for turn lights, coils for high beams etc.


Only problem that may be are ignition coil and alternator but car can start without ignition coil by connecting positive and negative from car battery direct on ignition motor (mind the polarity).


There is small chance that alternator could sustain some damage, if so your car will run but it will drain car battery and when that happens it will stop.

I hope i helped someone.