On Fri, 05 Feb 2010 09:32:54 +1100, Rob wrote:

On 5/02/2010 4:53 AM, asahartz wrote:
On Thu, 04 Feb 2010 09:47:25 +0000, wrote:

What sort of MPG should I get from a recent 807 HDI?

The on board computer is telling me 30MPG mixed driving
but the dealer said it would return 40-60 depending on towns/motorway.

Have I been lied to?

Dealers tend to be economical with the truth - they are trying to sell
you something after all. Probably not lying, but just saying it may be
capable of that mpg if you drive with a feather foot, lightly laden and
mainly motorways...


The best we get on a trip 6.2lt/100km from a 2.0 HDI wagon the official
figures are 4.7lt average all round. No chance in obtaining their
figures. On record attemps they say over 1000km on a tank yet the tank
is only 60lts. Go figure, the truth is very speculative.

Manufacturer mpg figures are calculated theoretically using emissions
data. Getting them in the real world tends to be somewhat mythical.

However there are still expert "economy drivers" who can squeeze every
last inch of of each gallon of fuel. It's no longer a major motorsport
event (though perhaps it ought to be!), though in the 60s it was very
big. The Caravan Club continued the event as a towing economy
competition until a few years ago. But when manufacturers do it, they
use a simple oval test track so that the car can be put in top gear and
cruise at its optimum speed for hundreds of miles - no changing gear,
hills, or acceleration to use more fuel!
--
asahartz woz ere