The Qashqai is Ireland's best-selling car. The Juke redefined the compact crossover. The Leaf is the used EV many first-time buyers choose. Nissan's petrol engines and manual gearboxes are straightforward and reliable. The CVT automatic gearbox fitted across the range needs fluid every 65,000km — this is the one maintenance item that transforms a Nissan from reliable to expensive. Know it, check it, service it.