new CarSpam[MAX_PLAYERS char];

public OnPlayerDisconnect(playerid,reason)
{
    CarSpam{playerid} = 0;
    return 1;
}
public OnPlayerStateChange(playerid,newstate,oldstate)
{
    CarSpam{playerid}++;
    SetTimerEx("SairCarSpam",1000,0,"i",playerid);

    if(CarSpam{playerid} > 3)
    {
        Ban(playerid);
    }
    return 1;
}
SairCarSpam(playerid);

public SairCarSpam(playerid)
{
    CarSpam{playerid} = 0;
}