It is almost the opposite.

A Simple Example

Imagine you’re driving a heavily loaded vehicle up a steep, uneven trail.

In a standard first gear, the vehicle may still move too quickly.

If you lift off the accelerator, the vehicle may slow but then threaten to stall.

If you use the clutch to control speed, you generate heat and wear.

With a crawler gear, you can select an extremely low ratio.

Now the wheels turn slowly while the engine continues operating at an appropriate speed.

The vehicle creeps forward.

There is less need to constantly slip the clutch.

You can concentrate more on steering, traction, and terrain.

That’s the fundamental idea.

The vehicle is trading speed for control.

Is Every “G” the Same?

No.

This is an important caution.

A letter printed on a gear selector is not a universal automotive language.

Different manufacturers and transmission systems can use letters differently.