Quote:
Originally Posted by D.O.G.
There's probably no "one size fits all" multiplying factor that can reasonably be applied.  |
Some Googling suggested a 20% difference on average, but of course there will never be a solid figure. You would of course use the average of city and highway ,which conveniently, is around 20% based on those Astina figures. It would never be strictly 'fair' but neither is using the NEDC numbers.
But I think I have a semi-solution, change the required percentage to claim 'hypermiler' for NEDC rated cars, that way we're not trying to compare apples to oranges, but just changing what we consider a 'good' result.
Perhaps simply matching NEDC should be enough to get a 'hypermiler' tag.