Hybrid Car – More Fun with Less Gas

Frustrated prius believer question - Page 6

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Posted by Michael Pardee on December 31, 2006, 6:24 pm

Greetings from Rome, Italy:
I also noticed an higher fuel comsumption during winter with my Sept.
2005 Prius, but no difference from Rome to Torino (about 450 miles).
Are you sure about the quality of the fuel?
Usually fuels sold in different areas, also if the same brand, may come
from different petrol, may be that this is the problem: why not try to
refuel from another brand?


That's another possibility. We may have a different formulation at high
altitude to prevent vapor lock. There aren't that many carbureted cars
running in the US, but there are enough that without controlling vapor
pressure the streets would be blocked with dead vehicles.


Posted by on December 31, 2006, 9:19 pm

Things like tail winds and following close behind another vehicle can have a
positve effect. I say most of what we experience is out of our hands though.
We may think the driving conditions in other locations are similiar but all
it takes is an accumilation of a minute here and a minute there of a bad
variable over and over; not enough to remember it but enough to effect
This summer I reset the fuel efficiency gauge to zero and drove 30 miles
west on the MA turnpike at 55 mph. Heading back east on the Pike I kept it
at 62 mph. When I reached the toll booth the gauge read 66.9 mpg.  I did the
same thing recently, not changing my behavior at all and the gauge read 50.5
mpg. In either case, by the time I got home it read 52.5 mpg. Traffic
congestion off the Pike worked for me and against me.
My fuel efficiency (on paper) for 10,000 miles is 49.9 mpg for 2004 and 50.2
mpg this year. We didn't go to Colorado :(

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