Factors in Prius MPG?

looking for links to info on breakdown of car design factors re how they contribute to the differential in mileage rating re regular car,
e.g.:
compare the 'base' gasoline Camry mileage (~25 mpg?) to the Prius (~45 mpg?), assume the difference is ~20mpg, what factors account for this ~20mpg difference, and what is their relative contribution?
gas engine running at optimum rpm when on: 30%? aerodynamic profile: 20%? vehicle weight: 10%? tire rolling resistance: 10%? braking regeneration: 10%? gas engine small displacement: 10%? gas engine off when idle: 10%? other factors???
would appreciate any links to websites that do an analysis of these design factors, tia!
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snipped-for-privacy@yahoo.com wrote:

If you want to eliminate aerodynamics as a factor, you could compare the gasoline only Camry with the hybrid Camry, or the Highlanders or the RX3?0 and RX400h. There is zero difference in those pairs.
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wrote:

I'm not aware of any websites that analyze these factors in the Prius. Seems like something like it should exist.....
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