Thanks everyone for contributing to answer my query. Frankly, the chances of us having to use any tools at all are small because as I mentioned, we travel only within the downtown city area. Also we maintain regularly. However, because the driver insists that there are no tools aside from the jack that was provided by the car company. If it was up to me, even if I have a complete tool, I wouldn't know how to repair anything in the car. Hence, I was thinking of getting basic once just for the sake of saying we have some tools. And if ever this is mandated by law, I don't want to be victimized by police stopping us just because we have no required tools (if any mandated by law). We do plan to get an early warning device. Long and short nose pliers are easy. However, other tools are a bit complicated. For instance there are many kinds of bolts and screws in the car, how should I know which size to get? It was overwhelming to see the different sizes available at the hardware and I don't plan to get them all.

So just to reconfirm, the only tool mandated by law to have in each car is an early warning device? Correct?