Yes, certain gear locks can be removed within 2 minutes. Steering and pedal locks can be cut with a hacksaw or the newer stronger ones, with a special tool. In addition to the fact that all 3 locks can be picked by most experienced locksmiths.
That’s not the point… Time is of the essence…
When somebody sees 2 VW Citi Golfs next to each other, who would they pick? The one that is the easiest to steal. So they would pick the one without the gear lock.
So yes, the more you make the criminals life difficult, the less they will want your car. Maybe if you have a limited edition Golf mk2 – 2 door, then yes. But in that case, you shouldn’t be leaving that rare car unattended in the parking lot in the first place!
So yes, to answer your question, gear locks and those things actually work.
Ok let’s see, a decent gearlock, they tried a professional locksmith take it off 7 minutes, then the steering lock, another 4 minutes, then for the pedal lock, they for some reason couldn’t get it loose so they were forced to cut it (lucky it was not the thick type – another 5 minutes.. Then the immobilizer, 2 minutes (yes these guys are good). So yes almost 20 minutes so far. In that case, they will probably just rather look into the car and see what they can quickly steal – so don’t leave your radio or stuff lying around where they are visible.