HitTestObject distance bug between two object - actionscript-3

Question

I have a car game which is drive reverse.The game over when enemy and car hit each other.I have problem with collision.
Car and enemy hit when they get close each other,but they have still big space in there.
Please check this image.
https://s8.postimg.cc/p85w0wm2t/image.gif
I use this code.
if(dubageri1.hitTestObject(carMC)){
dubageri1.gotoAndPlay(2);
geribas.gericarpti = true;
stage.removeEventListener(Event.ENTER_FRAME,engeller1geri1lev1)
}
Also I tried something like this.But this time collision has late.
var nDistX:Number = Math.abs ( carMC.x - dubageri1.x );
var nDistY:Number = Math.abs ( carMC.y - dubageri1.y );
var nDistance:Number = Math.sqrt ( nDistX * nDistX + nDistY * nDistY );
var sDistx:Number = Math.abs ( carMC.x - dubageri1.x );
var sDisty:Number = Math.abs ( carMC.y - dubageri1.y );
var nsistance:Number = Math.sqrt ( sDistx * sDistx + sDisty * sDisty );
collect.text=String(nDistance);
if ( nDistance < 120 )
{
trace("aha");
dubageri1.gotoAndPlay(2);
stage.removeEventListener(Event.ENTER_FRAME,dsaa);
}
Note:My objects was made as vector.
Does anybody tell me what im doing wrong ?
UPDATE
var aPoint:Point = new Point();
aPoint = carMC.localToGlobal(aPoint);
var bPoint:Point = new Point();
bPoint = dubageri1.localToGlobal(bPoint);
stage.addEventListener(Event.ENTER_FRAME,ilkcikis);
function ilkcikis(event:Event) {
bPoint = root.globalToLocal(bPoint);
var zHit:Boolean = carMC.hitTestPoint(bPoint.x, bPoint.y, true);
textbaba.text = zHit? "! HIT !": "NO HIT";
carMC.x=mouseX;
carMC.y=mouseY;
}