Actually in my passo 2011 , i dont have an issue of the mileage. On motorway, at speed around 115 km.h, my passo is given me 15-16. And normally it is given me around 17 with light foot. so mileage is ok. i am jst concerned about the engine efficiency and its life.
Lets c, after 3,4000kms, i will have to change its oil to 5w30(as per manual) then will see.