GTA stands for Grand Theft Auto, this feature allows you to steal cars.
In order to steal cars you'll need stamina just like the crimes system, every successfull stolen car will result into receiving stats, ranking points and a car.
Once you've successfully stolen a car it'll be moved to your garage where you can choose to sell the cars whenever you want.
Stolen cars will have a random amount of damage on them, the more damaged a car the less value it'll sell for.
You'll start your journey of stealing cars with low value cars.
By successfully stealing cars you'll start to unlock more valuable cars which allows you to earn more money.
Just like the crimes system you'll gain stats from successfully stealing cars.
Each car gives your character stats based on the bonus it has been assigned, unlike the crimes system you won't get to see percentages.
Every car gives bonus offense/defense and stealth, however the most beneficial stat will be indicated in the bonus.
Lets say there are 3 different GTA's, GTA 1 bonus is mixed, GTA 2 bonus is offense/stealth and GTA 3 bonus is defense.
GTA 1 with the mixed bonus is close to being 33% offense, 33% defense, 33% stealth.
GTA 2 with the offense / stealth bonus is close to being 40% offense, 20% defense, 40% stealth.
GTA 3 with the defense bonus is close to being 20% offense, 60% defense, 20% stealth.
Remember, these are just examples of how the percentages are divided and how the bonus is described to represent the percentages.