Did they mention they topped the tank up or estimated whats left? Maybe the manual says about 3 liters left
I wouldn't assume anything. This journalism seems to be very easy if you make assumptions....for example, they test ride a bike, and if you have never ridden one before, you have to take their word for it....then you buy and you wonder if you bought the same model .
We know the gen 1 and 2 mileage is about 10% out.....the gen 3??? What was the gearing on the gen 1?
Take it with a pinch of salt