Quote:
Originally Posted by ndabunka
EVERY other prior vehicle we have EVER bought we have been fortunate enough to easily exceed the posted EPA readings (maybe we've always driven more conservatively than most) so we didn't think it was unrealistic to have expected (at least) within 10%-20% of the ADVERTISED (at the time) ratings. Needless to say, 24MPG on a vehicle that advertised 31MPG (City) was...um, startling. After an ECU re-programming, proper oil and oil levels, etc the truck is now getting between 27 and 28MPG which is ...acceptable.
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I am confused by your statement. You state that don't think it is unrealistic to expect (at least) within 10 to 20% of the EPA numbers of 31 mpg city. That is exactly what you got though and you are complaining.
20% of 31 mpg = 6.2 mpg
10% of 31 mpg = 3.1 mpg
So if you would get between 24.8 and 27.9 mpg you feel that would be a reasonable expectation.
Isn't that pretty close to what you are getting on this vehicle before and after the changes. You have narrowed you deviation from 20% to 10% with some vehicle changes, but in either case you have meet your self-defined realistic expectation haven't you?
What am I missing.