depends on what is wrong with it you may need a new engine to fix it
I have no idea what the situation is but I would start with reading the contract.
ther is a loose connection in your ignition. when you slam the door or some thing of that nature it will fix the problem momentarily or it wont sometimes.
How do you fix any broken electrical equipment, replace it or have it serviced.
Diagnose your vw for any small faults.
How do you know that it is your car?
start your car then drive
It wont start
Ogerize it.
Your car wont start. lol
Could be many things. Mostly id check the coils first as they are what cause spark.
get a new hard drive or fix ur old one