^ ya man!
42 litres of fuel storage.
quality of petrol and additives.
type of driving conditions and road quality.
type of parts (spare used).
type of modifications used.
technology and tuning of engine.
type of environment and traffic.
apart from this a small comparison according to normal average and tests...
42L tank @ 13-14km/l=546 to 588km per tank
55L tank @ 13-14km/l=715 to 770km per tank
i think people may get 400 - 600 km per tank but then the owners will confirm the mileage and fuel economy!