The trick with the make is to take the enemy down to a sliver of health then jump out and finish him
That's just it. It's to much of a pain in the butt to operate that stupid thing.

It's set like 300 yrs in the future, and were still driving around in a rover with a diesel engine and goodyear tires.
Besides, there is just something about taking out an acid spitting giant worm with a pistol, that says 'Get you sum o dat'. Plus the fact, that when you get the sniper rifle maxed out and loaded up with those high explosive rounds and two scram rails, it becomes a portable hand cannon in itself.
If I'm in an open area with little or no cover, then that's when the Mako becomes a barricade. Now for that, it's very useful.