The article also forget to factor in peak vs off peak cbd grind...a Falcon in off peak traffic will be far more ecomical then a peak time test....
on a side note our G6ET does exactly the same driving style as the cbd part of this story and gets 15-16L/100km @20-22km/hr, considering 38% more power for a small increase in fuel use, and my wife has no idea about an economic driving style..
