[denNorske]

This works: Tested fully.

pawn Код:

if (AVehicleData[vehicleid][Fuel] > 0)
    {
        if ((newkeys & KEY_SUBMISSION) && !(oldkeys & KEY_SUBMISSION) && IsPlayerInAnyVehicle(playerid))
        {
        if(GetPlayerState(playerid) == PLAYER_STATE_DRIVER)
        {
                if(engine == 0 && lights == 0)
                {
                GetVehicleParamsEx(vehicleid,engine,lights,alarm,doors,bonnet,boot,objective);
                SetVehicleParamsEx(vehicleid,VEHICLE_PARAMS_ON,lights,alarm,doors,bonnet,boot,objective);
                SendClientMessage(playerid,COLOR_BLUE,"[CAR] Engine Started!");
                }
                else
                {
                GetVehicleParamsEx(vehicleid,engine,lights,alarm,doors,bonnet,boot,objective);
                SetVehicleParamsEx(vehicleid,VEHICLE_PARAMS_OFF,lights,alarm,doors,bonnet,boot,objective);
                SendClientMessage(playerid,COLOR_BLUE,"[CAR] Engine stopped!");
                }
        }
    }
}

Good luck!