[Nathan_Taylor]

pawn Код:

stock IsVehicleOccupied(vehicleid)
{
    for(new i =0; i < MAX_PLAYERS; i++)
    {
        if(IsPlayerInVehicle(i,vehicleid))
        {
            return 1;
        }
    }
    return 0;
}

CMD:rv(playerid,params[])
{
    if(PInfo[playerid][Level] < 3) return SendClientMessage(playerid,-4,"{FF9900}Only Admin Level 3 To Use Command!!!");
        
    for(new i = 0; i < MAX_VEHICLES; i++)
    {
        if(!IsVehicleOccupied(i))
        {
            SetVehicleToRespawn(GetPlayerVehicleID(i));
        }
    }
        
    SendClientMessageToAll(0xFFFFFFFF,"{FF0000}Administrator  Respawn Vehicle!!!");
    SendClientMessage(playerid,0xFFFFFFFF,"{FF9900}You Respawn Vehicle!!!!");
    return 1;
}

EDIT 2: My bad, thought you were trying to respawn them if someone was in them, I'll change the code above. UPDATED
Try that code. It will work if the admin level is 3 or above, and will only respawn unoccupied vehicles.