We had a Micra of that era. They had cam belts as I recall. If you cam belt fails your car won't go at all. Some cars had "safe engines", in which case a busted cam belt wasn't terminal, whereas with other cars (such as a crappy Daewoo Nexia I once bought dead cheap) the engine was totally trashed if the belt broke. Find out what your cam belt replacement interval is and stick strictly to it. It costs upwards of two or three hundred quid these days, and it may need a new water pump too, and it has to be done right. No amateur bodges!