How to Make a Car Undrivable?

[McChloe]

To prevent a car from starting, it's incredibly easy—there are numerous methods! For instance, tampering with the wiring is straightforward. Take the ignition coil, which typically has two wires: simply cut one and reroute it to a hidden switch only you know about. When starting the car, you flip the switch, but others remain unaware of this trick. There are many other approaches—anything related to the ignition system can be manipulated, such as the starter motor wiring, etc. Alternatively, install a GPS with an automatic fuel/power cutoff function. If you don’t want to lend the car, it’s guaranteed to stall within a few dozen meters, forcing the driver to call you obediently.