There are 2 types of damage to vehicles: Cosmetic and HP
Cosmetic are popping tires damaging vehicles appearance, 0.2x does not have the ability to "fix" damage to a car.
HP is the vehicles health (1000.0) and it is the amount of damage your vehicle will take before going on fire. I have thought of a way to give you a new car in a split second to make it seem you had a "spray paint job" but there is no way to determine the cars color... so it would be a random color and easily known to the player he was just given a new car and his was not fixed.
This is rumored to be available in 0.3, but who knows. (Tire state as well)
NOTE: It is possible to destroy a godded car from multiple explosions or flipping on its roof as there is a timer that goes off when upside down to blow the car up. None of this is my control as it is not script but the sa-mp game itself.
Hope this provides some clearification 
MERRY CHRISTMAS!! 
