[PowerPC603]

In that for-loop, shouldn't you check if the vehicle exists first before setting parameters on it?
You "might" get unexpected results if you're trying to set vehicleparameters on a non-existing vehicle.

Also, use GetVehicleParamsEx first, as some people may create vehicles and set objective to 1 for example when the server starts.
Setting all default values would overwrite all those settings.

Finally, place "new engine, lights, alarm, doors, bonnet, boot, objective; // Required variables." outside the loop.
It has no use to re-create the variables 2000 times (for each iteration of the loop).
Just create them once, then enter the loop.

pawn Code:

new engine, lights, alarm, doors, bonnet, boot, objective; // Required variables.
for(new i; i < MAX_VEHICLES; i++) // This is the loop if i is smaller then MAX VEHICLES it will continue.
{
    if (GetVehicleModel(i) != 0) // Check if the vehicle exists
    {
        GetVehicleParamsEx(i, engine, lights, alarm, doors, bonnet, boot, objective);
        SetVehicleParamsEx(i, 0, 0, alarm, doors, bonnet, boot, objective); // Keep all parameters, but turn engine and lights off
    }
}
return 1;
// Put the code above at end of InGameInit().