Nissan gave us great mileage but I never checked miles per gallon.
according to info on the net:
(depending on the engine, speed 90 km/h)
1.0 l (998 cm3), 16V - 6 l/100 km
1.3 l (1275 cm3), 16V - 6,8 l/100 km
1.4 l (1348 cm3), 16V - 6,1 l/100 km
1.5 l (1527 cm3) Diesel - 5,2 l/100 km
l = litre, km = kilometre