Originally Posted by Gouranga

had the 4runnner for a year now (canadian venture)
have 9000km on it

does anyone else have this issue that when driving at 90km/h flat road i get
9-10L/100km

but going 100km/ i get 15L/100km and 110-120km i get 17L/100km

just seems going 90km on a highway is WAY cheaper than going 100km
from 10L to 15L per 100km is a big jump

usually with my other cars highway driving is 2x cheaper than city driving
but in my case highway gives me the worst fuel economy compare to light city driving i live in a small town if im driving 60-80km/H through the town without too many red lights i get 8-9L/100km and can get about 600km to the tank

on highway however i get 450km max.

i was thinking is it my stock venture roofrack causing such bad higher speed Fuel economy because more resistance from the wind vs lower speeds

or is this normal ?

for RPM on highway its exactly at 2.1rpm when driving 110km/h